I cvs'uped a couple of days ago and built a new 1.5 kernel (still trying to 
build a kernel without the pmap_enter panic) and this one boots on my 
VS3100/M76 but goes into a loop prior to going multiuser with a bunch of 
messages about the cache being wrong. They don't seem to be captured in 
either the dmesg or log output so I can't reproduce them for you here. Very 
strange.

--Chuck