I'd be willing to bet that the change was meant to fix this problem. The -12 problem you're having may be fixed as well in -13, so please test that when it's available.
Give the change in /proc/interrupts, I'm going to close this bug. If it re-occurs, please change it back to Needs info, and add a comment (Needs Info will make sure it gets my attention). ** Changed in: linux-source-2.6.20 (Ubuntu) Status: Needs Info => Rejected -- kernel later than 2.6.20-6 crash https://launchpad.net/bugs/90209 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs