Thanks for your report. Assigning this to flash instead of Firefox as that seems to be the issue. This bug seems to have slipped through the cracks and is pretty old so I would suggest trying Flash 9 Final if you have not already.
** Changed in: firefox (Ubuntu) Sourcepackagename: firefox => flashplugin-nonfree -- Firefox unresponsive when CPU is occupied 100% with a low priority process https://launchpad.net/bugs/68791 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
