I have a similar problem, but on Feisty. Several days ago I stopped getting any changes at all.
I'm not sure it's an update manager bug though, aptitude fails to get the changelog, too: $aptitude changelog anacron Ign ChangeLog of anacron E: Couldn't fetch URL http://changelogs.ubuntu.com/changelogs/pool/main/a/anacron/anacron_2.3-13ubuntu2/changelog E: Couldn't find a changelog for anacron I haven't tried them all with aptitude, but there are 113 updates in the update manager and neither has the changelog. -- update-manager fails to show changes https://launchpad.net/bugs/72404 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs