CJ wrote on 02.02.09 at 07:59:52:

BH1942 disables the cache.... 99% of all our patches disable the cache by default...

Since BH1942 is always running in super duper mode on my MSTE (and I can't force it to run at 8Mhz), is it possible your cache flipping code is somehow doing the opposite of what's intended and flipping my machine into 16/cache on?

That may not make any sense, but it does fit the evidence at hand.  :-?