kernel-2.6.19-1.2895.fc6 dies. do_IRQ

[Naoki]

Sorry for the cross-post (fedora-list) but I'm wondering if any help is required in debugging?

This locks my IBM x3550 :

"do_IRQ: 0.177 No irq handler for vector"

I need a power cycle after that. Messages file reveals.. Not much really :

Jan 30 20:32:10 localhost kernel: SELinux: initialized (dev autofs, type
autofs), uses genfs_contexts
Jan 30 20:32:10 localhost last message repeated 2 times
Jan 30 20:32:10 localhost kernel: do_IRQ: 0.177 No irq handler for
vector

Looking around I find Mr Andrew Morton on the case, which is a relief. 
http://lkml.org/lkml/2007/1/22/121

It's being seen on 16-core systems, I'm running only a four core box
though.

Doesn't look like a patch is out yet so my original plan of trying
Rawhide probably will not help. Current rawhide kernel is 2.6.19-1.2914.fc7.

I have not (yet?) had the problem on 2.6.18-1.2798.fc6.  It only seems
to be a problem in the 2.6.19 kernel IRQ handling?