This bug is not a bug in update-manager, because update-manager denied knowledge of any new version of Ubuntu, so (following the instructions on <https://help.ubuntu.com/community/EdgyUpgrades>) I used aptitude dist-upgrade instead.
** Changed in: update-manager (Ubuntu) Sourcepackagename: update-manager => None Assignee: (unassigned) => Michael Vogt -- Upgrade to Edgy fails ("Cannot remove /usr/X11R6/bin directory") if Opera is installed https://launchpad.net/bugs/68983 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs