Upgrade to linux-image 2.6.20.12.8 fixed the source of the problem (the need to start with irqpoll) so this bug can be closed...
-- BUG: soft lockup detected on CPU#0! Disabling IRQ #18 https://launchpad.net/bugs/92907 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
