npm untrusted certificate issues

npm-debug.log

0 info it worked if it ends with ok
1 verbose cli [ 'node',
1 verbose cli   '/usr/local/bin/npm',
1 verbose cli   'search',
1 verbose cli   'es6-module-transpiler' ]
2 info using npm@1.1.33
3 info using node@v0.8.1
4 verbose config file /Users/Ryan/.npmrc
5 verbose config file /usr/local/etc/npmrc
6 verbose config file /usr/local/lib/node_modules/npm/npmrc
7 verbose url raw /-/all/since?stale=update_after&startkey=1348217478000
8 verbose url resolving [ 'https://registry.npmjs.org/',
8 verbose url resolving   './-/all/since?stale=update_after&startkey=1348217478000' ]
9 verbose url resolved https://registry.npmjs.org/-/all/since?stale=update_after&startkey=1348217478000
10 info retry registry request attempt 1 at 13:07:54
11 http GET https://registry.npmjs.org/-/all/since?stale=update_after&startkey=1348217478000
12 info retry will retry, error on last attempt: Error: SSL Error: CERT_UNTRUSTED
13 info retry registry request attempt 2 at 13:09:06
14 http GET https://registry.npmjs.org/-/all/since?stale=update_after&startkey=1348217478000
15 info retry will retry, error on last attempt: Error: SSL Error: CERT_UNTRUSTED
16 info retry registry request attempt 3 at 13:10:07
17 http GET https://registry.npmjs.org/-/all/since?stale=update_after&startkey=1348217478000
18 error Error: SSL Error: CERT_UNTRUSTED
18 error     at ClientRequest.<anonymous> (/usr/local/lib/node_modules/npm/node_modules/request/main.js:409:26)
18 error     at ClientRequest.g (events.js:185:14)
18 error     at ClientRequest.EventEmitter.emit (events.js:88:17)
18 error     at HTTPParser.parserOnIncomingClient [as onIncoming] (http.js:1445:7)
18 error     at HTTPParser.parserOnHeadersComplete [as onHeadersComplete] (http.js:111:23)
18 error     at CleartextStream.socketOnData [as ondata] (http.js:1356:20)
18 error     at CleartextStream.CryptoStream._push (tls.js:396:27)
18 error     at SecurePair.cycle (tls.js:751:20)
18 error     at EncryptedStream.CryptoStream.write (tls.js:131:13)
18 error     at Socket.ondata (stream.js:38:26)
18 error  [Error: SSL Error: CERT_UNTRUSTED]
19 error You may report this log at:
19 error     <http://github.com/isaacs/npm/issues>
19 error or email it to:
19 error     <npm-@googlegroups.com>
20 error System Darwin 11.4.2
21 error command "node" "/usr/local/bin/npm" "search" "es6-module-transpiler"
22 error cwd /Users/Ryan
23 error node -v v0.8.1
24 error npm -v 1.1.33
25 error message SSL Error: CERT_UNTRUSTED
26 verbose exit [ 1, true ]