These bugs may be related (although I'm not sure whether this bug is a dupe of one of them):
Bug 302 Bug 3930 Bug 35942 Bug 42697 Bug 45803 Bug 27093 Bug 25681 -- Firefox hangs with Flash https://launchpad.net/bugs/50449 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
