$ geth --vmodule=sync=6,downloader=6 log

gistfile1.txt

$  geth --vmodule=sync=6,downloader=6 
I0602 23:28:46.609277   67693 backend.go:256] Protocol Version: 60, Network Id: 0
I0602 23:28:46.609328   67693 backend.go:266] Blockchain DB Version: 3
I0602 23:28:46.612043   67693 chain_manager.go:258] Last block (#509995) 233053420cb407060ae6c16084f48494bb8028785b8863227d1d15f6ba61543d TD=2192318912146067
I0602 23:28:50.140005   67693 cmd.go:148] Starting Geth/v0.9.26-0e703d92/darwin/go1.4.2
I0602 23:28:50.140210   67693 server.go:293] Starting Server
I0602 23:28:50.147044   67693 udp.go:189] Listening, enode://76aa6d0570fc7b698b57d2b25d43256d849501bbc72cdd817f89181140cde6081dd482106610f9ef6a4513b57092fcea7a5cf9d2c2cfbf14b3e18edf8addbbbe@[::]:30303
I0602 23:28:50.147211   67693 server.go:530] Listening on [::]:30303
I0602 23:28:50.147402   67693 backend.go:477] Server started
I0602 23:28:56.144082   67693 downloader.go:138] Registering peer 5ee084eec8492c77
I0602 23:28:59.707545   67693 downloader.go:138] Registering peer 7aac5c86ba270b79
I0602 23:29:00.148832   67693 sync.go:102] Attempting synchronisation: 5ee084eec8492c77, 0x615c75d87d27bcac1ffc5f16cc57dbc06a9ae0a8b375645dba93c8bbd4efceed
I0602 23:29:00.148858   67693 downloader.go:169] Block synchronisation started
I0602 23:29:00.148895   67693 downloader.go:218] Synchronizing with the network using: 5ee084eec8492c77
I0602 23:29:00.148922   67693 downloader.go:256] Downloading hashes (615c75d8) from 5ee084eec8492c77
I0602 23:29:05.152069   67693 downloader.go:367] Peer (5ee084eec8492c77) didn't respond in time for hash request
I0602 23:29:05.152155   67693 sync.go:113] Removing peer 5ee084eec8492c77: timeout
I0602 23:29:05.152175   67693 downloader.go:149] Unregistering peer 5ee084eec8492c77
I0602 23:29:05.344233   67693 downloader.go:149] Unregistering peer 7aac5c86ba270b79
I0602 23:29:08.831464   67693 downloader.go:138] Registering peer de471bccee3d0422
I0602 23:29:09.124749   67693 downloader.go:138] Registering peer 262167eb28c7ce1b
I0602 23:29:09.371915   67693 downloader.go:138] Registering peer a979fb575495b8d6
I0602 23:29:10.058735   67693 downloader.go:138] Registering peer ea79aad8f0460b9f
I0602 23:29:10.148731   67693 sync.go:102] Attempting synchronisation: 262167eb28c7ce1b, 0xe025d4961cdabf3a00af9fc074bdd6d730d38c6b517989cf073d8ae72e5fa745
I0602 23:29:10.148778   67693 downloader.go:218] Synchronizing with the network using: 262167eb28c7ce1b
I0602 23:29:10.148787   67693 downloader.go:256] Downloading hashes (e025d496) from 262167eb28c7ce1b
I0602 23:29:10.737027   67693 downloader.go:138] Registering peer b19e825cf5b15d75
I0602 23:29:12.629421   67693 downloader.go:303] Found common hash 23305342
I0602 23:29:12.630976   67693 downloader.go:391] Downloaded hashes (1644) in 2.4821791s
I0602 23:29:12.631007   67693 downloader.go:400] Downloading 1644 block(s)
I0602 23:29:17.674754   67693 sync.go:120] Synchronisation failed: no peers available or all peers tried for block download process
I0602 23:29:20.045977   67693 downloader.go:149] Unregistering peer b19e825cf5b15d75
I0602 23:29:20.148908   67693 sync.go:102] Attempting synchronisation: 262167eb28c7ce1b, 0xe025d4961cdabf3a00af9fc074bdd6d730d38c6b517989cf073d8ae72e5fa745
I0602 23:29:20.149209   67693 downloader.go:218] Synchronizing with the network using: 262167eb28c7ce1b
I0602 23:29:20.149222   67693 downloader.go:256] Downloading hashes (e025d496) from 262167eb28c7ce1b
I0602 23:29:20.519836   67693 downloader.go:149] Unregistering peer 262167eb28c7ce1b
I0602 23:29:20.735802   67693 downloader.go:149] Unregistering peer ea79aad8f0460b9f
I0602 23:29:23.446133   67693 sync.go:102] Attempting synchronisation: a979fb575495b8d6, 0xb1a3ba1273bafa2e2c041b8b96d4f70113eef8f28d162f982f59761f6a7bacf3
I0602 23:29:23.446186   67693 sync.go:110] Synchronisation already in progress
I0602 23:29:25.150751   67693 downloader.go:367] Peer (262167eb28c7ce1b) didn't respond in time for hash request
I0602 23:29:25.150804   67693 sync.go:113] Removing peer 262167eb28c7ce1b: timeout
I0602 23:29:25.264792   67693 downloader.go:149] Unregistering peer de471bccee3d0422
I0602 23:29:30.148542   67693 sync.go:102] Attempting synchronisation: a979fb575495b8d6, 0xb1a3ba1273bafa2e2c041b8b96d4f70113eef8f28d162f982f59761f6a7bacf3
I0602 23:29:30.148605   67693 downloader.go:218] Synchronizing with the network using: a979fb575495b8d6
I0602 23:29:30.148615   67693 downloader.go:256] Downloading hashes (b1a3ba12) from a979fb575495b8d6
I0602 23:29:35.150542   67693 downloader.go:367] Peer (a979fb575495b8d6) didn't respond in time for hash request
I0602 23:29:35.150589   67693 sync.go:113] Removing peer a979fb575495b8d6: timeout
I0602 23:29:35.150605   67693 downloader.go:149] Unregistering peer a979fb575495b8d6
I0602 23:29:37.933864   67693 downloader.go:138] Registering peer 97903e26c215ee6a
I0602 23:29:38.982462   67693 downloader.go:138] Registering peer 7aac5c86ba270b79
I0602 23:29:40.149122   67693 sync.go:102] Attempting synchronisation: 97903e26c215ee6a, 0x3ea0850c8973d3cb6da3d249d23b120513a84f7580652f401f70f70f83322954
I0602 23:29:40.149173   67693 downloader.go:218] Synchronizing with the network using: 97903e26c215ee6a
I0602 23:29:40.149184   67693 downloader.go:256] Downloading hashes (3ea0850c) from 97903e26c215ee6a
I0602 23:29:44.276272   67693 downloader.go:149] Unregistering peer 7aac5c86ba270b79
I0602 23:29:44.638789   67693 downloader.go:149] Unregistering peer 97903e26c215ee6a
I0602 23:29:45.151340   67693 downloader.go:367] Peer (97903e26c215ee6a) didn't respond in time for hash request
I0602 23:29:45.151431   67693 sync.go:113] Removing peer 97903e26c215ee6a: timeout
I0602 23:29:53.062260   67693 downloader.go:138] Registering peer 00a3c84004e88782
I0602 23:29:53.104256   67693 downloader.go:138] Registering peer 8df1658aa41f0075
I0602 23:29:53.727338   67693 downloader.go:138] Registering peer f86a89edaa6d21ea
I0602 23:29:56.244001   67693 downloader.go:138] Registering peer b19e825cf5b15d75
I0602 23:29:58.216399   67693 downloader.go:149] Unregistering peer 8df1658aa41f0075
I0602 23:29:58.424210   67693 downloader.go:149] Unregistering peer 00a3c84004e88782
I0602 23:29:59.341768   67693 downloader.go:149] Unregistering peer f86a89edaa6d21ea
I0602 23:29:59.984806   67693 sync.go:102] Attempting synchronisation: b19e825cf5b15d75, 0xe603cac3851ef920658292ab7c48b1d01b61b62981a2db34a28ea2f1b3e83395
I0602 23:29:59.984880   67693 downloader.go:218] Synchronizing with the network using: b19e825cf5b15d75
I0602 23:29:59.984891   67693 downloader.go:256] Downloading hashes (e603cac3) from b19e825cf5b15d75
I0602 23:29:59.985182   67693 sync.go:102] Attempting synchronisation: b19e825cf5b15d75, 0xe603cac3851ef920658292ab7c48b1d01b61b62981a2db34a28ea2f1b3e83395
I0602 23:29:59.985230   67693 sync.go:110] Synchronisation already in progress
I0602 23:30:00.148040   67693 sync.go:102] Attempting synchronisation: b19e825cf5b15d75, 0xe603cac3851ef920658292ab7c48b1d01b61b62981a2db34a28ea2f1b3e83395
I0602 23:30:00.148101   67693 sync.go:110] Synchronisation already in progress
I0602 23:30:04.987512   67693 downloader.go:367] Peer (b19e825cf5b15d75) didn't respond in time for hash request
I0602 23:30:04.987783   67693 sync.go:113] Removing peer b19e825cf5b15d75: timeout
I0602 23:30:04.987813   67693 downloader.go:149] Unregistering peer b19e825cf5b15d75
I0602 23:30:09.214471   67693 downloader.go:138] Registering peer 83b9909acb594b80
I0602 23:30:09.303922   67693 downloader.go:138] Registering peer 6274ae0dcd3153a3
I0602 23:30:10.149161   67693 sync.go:102] Attempting synchronisation: 6274ae0dcd3153a3, 0x24d0714c4b36d075644b36184b59197fdd186c54d870ff5b6d7a234d51526dfb
I0602 23:30:10.149206   67693 downloader.go:218] Synchronizing with the network using: 6274ae0dcd3153a3
I0602 23:30:10.149213   67693 downloader.go:256] Downloading hashes (24d0714c) from 6274ae0dcd3153a3
I0602 23:30:11.232717   67693 downloader.go:138] Registering peer 39f862a604c84469
I0602 23:30:11.511254   67693 downloader.go:303] Found common hash 23305342
I0602 23:30:11.512916   67693 downloader.go:391] Downloaded hashes (1648) in 1.363694922s
I0602 23:30:11.512937   67693 downloader.go:400] Downloading 1648 block(s)
I0602 23:30:16.535354   67693 sync.go:120] Synchronisation failed: no peers available or all peers tried for block download process
I0602 23:30:17.404535   67693 downloader.go:138] Registering peer 7aac5c86ba270b79
I0602 23:30:20.147570   67693 sync.go:102] Attempting synchronisation: 6274ae0dcd3153a3, 0x24d0714c4b36d075644b36184b59197fdd186c54d870ff5b6d7a234d51526dfb
I0602 23:30:20.147612   67693 downloader.go:218] Synchronizing with the network using: 6274ae0dcd3153a3
I0602 23:30:20.147620   67693 downloader.go:256] Downloading hashes (24d0714c) from 6274ae0dcd3153a3
I0602 23:30:20.748687   67693 sync.go:102] Attempting synchronisation: 39f862a604c84469, 0x0b9cc139c4fe819f24e642ba08ab55bb9f82524978bbdb936473def04d4af75c
I0602 23:30:20.748718   67693 sync.go:110] Synchronisation already in progress
I0602 23:30:21.027255   67693 sync.go:102] Attempting synchronisation: 39f862a604c84469, 0x0b9cc139c4fe819f24e642ba08ab55bb9f82524978bbdb936473def04d4af75c
I0602 23:30:21.027373   67693 sync.go:110] Synchronisation already in progress
I0602 23:30:25.150388   67693 downloader.go:367] Peer (6274ae0dcd3153a3) didn't respond in time for hash request
I0602 23:30:25.150443   67693 sync.go:113] Removing peer 6274ae0dcd3153a3: timeout
I0602 23:30:25.150459   67693 downloader.go:149] Unregistering peer 6274ae0dcd3153a3
I0602 23:30:26.045106   67693 downloader.go:138] Registering peer a979fb575495b8d6
I0602 23:30:27.446860   67693 downloader.go:138] Registering peer 061bc040693ea859
I0602 23:30:28.197531   67693 sync.go:102] Attempting synchronisation: 39f862a604c84469, 0x0b9cc139c4fe819f24e642ba08ab55bb9f82524978bbdb936473def04d4af75c
I0602 23:30:28.197594   67693 downloader.go:218] Synchronizing with the network using: 39f862a604c84469
I0602 23:30:28.197605   67693 downloader.go:256] Downloading hashes (0b9cc139) from 39f862a604c84469
I0602 23:30:28.995404   67693 sync.go:102] Attempting synchronisation: 061bc040693ea859, 0x02b0d21f28046af74f545ba50475cbcfa5b85c4a9ce92f7113489dd0e60519ff
I0602 23:30:28.995439   67693 sync.go:110] Synchronisation already in progress
I0602 23:30:29.381467   67693 sync.go:102] Attempting synchronisation: 39f862a604c84469, 0x0b9cc139c4fe819f24e642ba08ab55bb9f82524978bbdb936473def04d4af75c
I0602 23:30:29.381503   67693 sync.go:110] Synchronisation already in progress
I0602 23:30:29.759577   67693 downloader.go:138] Registering peer 9f4eab3e67ba9d4b
I0602 23:30:29.849002   67693 sync.go:102] Attempting synchronisation: 9f4eab3e67ba9d4b, 0x7e8eb1a5352af0841f64d6d7b1138997fcdcf1351f151ef56ab9cb233b5f1292
I0602 23:30:29.849029   67693 sync.go:110] Synchronisation already in progress
I0602 23:30:29.903144   67693 downloader.go:149] Unregistering peer 39f862a604c84469
I0602 23:30:30.148706   67693 sync.go:102] Attempting synchronisation: 9f4eab3e67ba9d4b, 0x7e8eb1a5352af0841f64d6d7b1138997fcdcf1351f151ef56ab9cb233b5f1292
I0602 23:30:30.148754   67693 sync.go:110] Synchronisation already in progress
I0602 23:30:30.361754   67693 sync.go:102] Attempting synchronisation: a979fb575495b8d6, 0x154cd2a0c9c06fc58d21aabf65861b7472251b26f1f071628d917f5a120aeafe
I0602 23:30:30.361797   67693 sync.go:110] Synchronisation already in progress
I0602 23:30:30.598394   67693 sync.go:102] Attempting synchronisation: a979fb575495b8d6, 0xf27c49d43f84782bb546e29ca5afc39a20675ad0207d78333f77953f45857d1e
I0602 23:30:30.598427   67693 sync.go:110] Synchronisation already in progress
I0602 23:30:30.656968   67693 sync.go:102] Attempting synchronisation: a979fb575495b8d6, 0x154cd2a0c9c06fc58d21aabf65861b7472251b26f1f071628d917f5a120aeafe
I0602 23:30:30.657001   67693 sync.go:110] Synchronisation already in progress
I0602 23:30:30.862700   67693 sync.go:102] Attempting synchronisation: a979fb575495b8d6, 0xf27c49d43f84782bb546e29ca5afc39a20675ad0207d78333f77953f45857d1e
I0602 23:30:30.862739   67693 sync.go:110] Synchronisation already in progress
I0602 23:30:32.587478   67693 sync.go:102] Attempting synchronisation: 9f4eab3e67ba9d4b, 0x6f51f3567823d4ec28b5e7a5efc1354dbe63ba16c067eb50eb2bde9a0c8af6b0
I0602 23:30:32.587522   67693 sync.go:110] Synchronisation already in progress
I0602 23:30:33.198269   67693 downloader.go:367] Peer (39f862a604c84469) didn't respond in time for hash request
I0602 23:30:33.198326   67693 sync.go:113] Removing peer 39f862a604c84469: timeout
I0602 23:30:34.354587   67693 sync.go:102] Attempting synchronisation: 9f4eab3e67ba9d4b, 0x6f51f3567823d4ec28b5e7a5efc1354dbe63ba16c067eb50eb2bde9a0c8af6b0
I0602 23:30:34.354687   67693 downloader.go:218] Synchronizing with the network using: 9f4eab3e67ba9d4b
I0602 23:30:34.354699   67693 downloader.go:256] Downloading hashes (6f51f356) from 9f4eab3e67ba9d4b
I0602 23:30:34.356073   67693 downloader.go:138] Registering peer f814349ee426b807
I0602 23:30:37.631025   67693 downloader.go:149] Unregistering peer 9f4eab3e67ba9d4b
I0602 23:30:39.355496   67693 downloader.go:367] Peer (9f4eab3e67ba9d4b) didn't respond in time for hash request
I0602 23:30:39.355555   67693 sync.go:113] Removing peer 9f4eab3e67ba9d4b: timeout
I0602 23:30:40.148335   67693 sync.go:102] Attempting synchronisation: 061bc040693ea859, 0x02b0d21f28046af74f545ba50475cbcfa5b85c4a9ce92f7113489dd0e60519ff
I0602 23:30:40.148395   67693 downloader.go:218] Synchronizing with the network using: 061bc040693ea859
I0602 23:30:40.148404   67693 downloader.go:256] Downloading hashes (02b0d21f) from 061bc040693ea859
I0602 23:30:41.493552   67693 downloader.go:149] Unregistering peer 061bc040693ea859
I0602 23:30:45.150954   67693 downloader.go:367] Peer (061bc040693ea859) didn't respond in time for hash request
I0602 23:30:45.151008   67693 sync.go:113] Removing peer 061bc040693ea859: timeout
I0602 23:30:45.599229   67693 sync.go:102] Attempting synchronisation: a979fb575495b8d6, 0x42e013cd179f25abdd12a33859c65ffa0ac0c1e2a568afa02648324a4cf63c04
I0602 23:30:45.599285   67693 downloader.go:218] Synchronizing with the network using: a979fb575495b8d6
I0602 23:30:45.599295   67693 downloader.go:256] Downloading hashes (42e013cd) from a979fb575495b8d6
I0602 23:30:46.352905   67693 sync.go:102] Attempting synchronisation: a979fb575495b8d6, 0x42e013cd179f25abdd12a33859c65ffa0ac0c1e2a568afa02648324a4cf63c04
I0602 23:30:46.352950   67693 sync.go:110] Synchronisation already in progress
I0602 23:30:46.820794   67693 sync.go:102] Attempting synchronisation: a979fb575495b8d6, 0x42e013cd179f25abdd12a33859c65ffa0ac0c1e2a568afa02648324a4cf63c04
I0602 23:30:46.820837   67693 sync.go:110] Synchronisation already in progress
I0602 23:30:47.406622   67693 downloader.go:149] Unregistering peer 7aac5c86ba270b79
I0602 23:30:47.908847   67693 downloader.go:138] Registering peer bc85a4afc7bd2217
I0602 23:30:48.065556   67693 downloader.go:138] Registering peer 39f862a604c84469
I0602 23:30:48.311203   67693 downloader.go:138] Registering peer 6274ae0dcd3153a3
I0602 23:30:49.614223   67693 downloader.go:303] Found common hash 23305342
I0602 23:30:49.615630   67693 downloader.go:391] Downloaded hashes (1639) in 4.016326193s
I0602 23:30:49.615647   67693 downloader.go:400] Downloading 1639 block(s)
I0602 23:30:49.696478   67693 downloader.go:149] Unregistering peer f814349ee426b807
I0602 23:30:50.149067   67693 sync.go:102] Attempting synchronisation: 39f862a604c84469, 0xb7e1f0e1c61cccb2ff0adf01a53321b48fbed1ea0b2da778e1548109c8fd2123
I0602 23:30:50.149100   67693 sync.go:110] Synchronisation already in progress
I0602 23:30:51.623633   67693 sync.go:102] Attempting synchronisation: 39f862a604c84469, 0xb7e1f0e1c61cccb2ff0adf01a53321b48fbed1ea0b2da778e1548109c8fd2123
I0602 23:30:51.623705   67693 sync.go:110] Synchronisation already in progress
I0602 23:30:52.007696   67693 downloader.go:138] Registering peer 4a5a722a073c1c63
I0602 23:30:56.690841   67693 downloader.go:149] Unregistering peer 39f862a604c84469
I0602 23:30:57.008376   67693 downloader.go:149] Unregistering peer a979fb575495b8d6