There are no WiFi adaptors in my system.  I have observed this bug on
both my hardwired 100/1000 NICs.

Note all my failures have been on 2.6.24-16.  (Changed title)  I did not
run the -14 kernel.

I tried reproducing yesterday by pounding on the CPU with infinite make -j4 
kernel compiles.  
Both cores in my CPU were saturated for 3+ hours.  No failures during this test.
Crashed once during the 24 hours, but I still can't figure out a good way to 
reproduce.

My best guess is this is triggered by an unusual condition in the
networking stack, e.g. segmentation, checksum, or MTU misalignment.

Has anyone tried seeing if a serial console still responds after
failure?

-- 
Linux kernel 2.6.24-12 lockup
https://bugs.launchpad.net/bugs/204996
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