Ubuntu 8 LTS distro upgrade

root@esolTEST:~# do-release-upgrade
Checking for a new ubuntu release
Done Upgrade tool signature
Done Upgrade tool
Done downloading
authenticate 'precise.tar.gz' against 'precise.tar.gz.gpg'
extracting 'precise.tar.gz'
/tmp/tmpyaKFRw/DistUpgradeMain.py:102: Warning: 'with' will become a reserved keyword in Python 2.6
Traceback (most recent call last):
  File "/tmp/tmpyaKFRw/precise", line 3, in <module>
    from DistUpgradeMain import main
  File "/tmp/tmpyaKFRw/DistUpgradeMain.py", line 102
    with open(fname, "a"):
            ^
SyntaxError: invalid syntax