upgraded to rev 2, and now at least both cores are detected. firefox 3 doesn't seem to crash as much, and it doesn't seem to have the divide by zero error (which some googling '__gettimeofday divide by zero' seems to have affected others, not all osx86, with no resolution) so that's good.

only problem I have now is that > 2gb memory gives me kernel panics on IOMemoryDescriptor.cpp ... seems like a common problem on some Intel/VIA boards, but I can't seem to remedy it without doing maxmem=2048. Oh well, would be nice to use the full 4 gigs I just got, but whatever.