I found this closed bug on Google while trying to troubleshoot the same issue. I can confirm that it happens randomly.
Switching to a virtual console and back with CTRL+ALT+F2 and CTRL+ALT+F7 causes metacity to resume normal behavior. -- maximize/minimize unresponsive https://bugs.launchpad.net/bugs/128620 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
