This may sound like a really silly question, but did you run "sudo dpkg --configure -a"? (It won't work without sudo). Could you please do this and post any messages which appear in the terminal.
Thanks ** Changed in: dpkg (Ubuntu) Sourcepackagename: gnome-system-monitor => dpkg Status: New => Incomplete -- After intrepid update: Update manager fails to install new updates https://bugs.launchpad.net/bugs/291517 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-system-monitor in ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs