I see this same problem on 9.10, and the apt-get is running in the background as well. When the apt-get finishes, update manager will install the updates with no problems, no restart is necessary.
-- Update manager starts when the apt download lock isn't yet released https://bugs.launchpad.net/bugs/392922 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs