gistfile1.txt

$ sudo do-release-upgrade
Checking for a new ubuntu release
Traceback (most recent call last):
  File "/usr/bin/lsb_release", line 340, in <module>
    main()
  File "/usr/bin/lsb_release", line 304, in main
    distinfo = get_distro_information()
  File "/usr/bin/lsb_release", line 267, in get_distro_information
    distinfo = guess_debian_release()
  File "/usr/bin/lsb_release", line 226, in guess_debian_release
    rinfo = guess_release_from_apt()
  File "/usr/bin/lsb_release", line 182, in guess_release_from_apt
    version = RELEASE_CODENAME_LOOKUP.get(unknown, rinfo.get('suite',''))
NameError: global name 'unknown' is not defined
lsb_release returned exitcode: 1
current dist not found in meta-release file
No new release found
billy@nhappg:~$ cat /etc/issue
Ubuntu 8.04.4 LTS \n \l