This ugly message came up sometime last night while I was blissfully 
sleeping..

1vm_fault(117000, 8bb0000,1 ,0) -> 1vm_fault(117000, 8bb0000,1 ,0) -> 1vm_fault

It was ugly.
Any ideas?

I couldn't get to a debugger.  I had X running, and this message came up 
once before, also with X running.  Neither time was I able to get a debugger.
I forget what I was doing the first time.....  But while I was asleep, it 
was obviously doing naughty things....

Dave