Just took a deeper look at the source code, file: /usr/lib/python2.4/site-packages/UpdateManager/MetaRelease.py
Add at the end of this file, in the download exception code: self.metarelease_information=f Otherwise, stays to None after object initialisation, the check() procedure then does not parse() the release file. The end of this file appears now: except urllib2.URLError: if os.path.exists(self.METARELEASE_FILE): f=open(self.METARELEASE_FILE,"r") self.metarelease_information=f This does the trick for me. -- update-manager does not offer option to upgrade to Feisty https://bugs.launchpad.net/bugs/108363 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs