This looks like a corrupted download for a whole bunch of packages during the upgrade. I don't think this is an Ubuntu problem, but rather a one-off download problem.
** Changed in: indicator-application (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/627553 Title: package python-appindicator (not installed) failed to install/upgrade: -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs