I've been seeing the following panic, fairly regularly:

	panic: unwire: page not in pmap
	
the kernel debugger then starts up.  The panic seems to be occuring under
moderate load (compiler jobs, etc).

I'm not at all familiar with the kernel debugger -- is there something I 
can do in the way of a core dump at this point (under the assumption that 
someone might want to take a look at it to see why the pmap code is failing)?  

--Carl