I'll add a "me too" -- prior to the Dapper release, the changelogs usually appeared in the update-notifier window. Since the release, the text area for the changelog refreshes for each package, but the text area contains nothing (blank). The package description panel, on the other hand, continues to function normally.
-- update-manager shows no changelog for various packages https://launchpad.net/bugs/40058 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs