BTW,  My MMU error just happened again.  I got a little more detail now:

vm_fault(0xf8148000, 0xf8030200, 0x3, 0) -> 0x2
trap type = 0x8, code 0x803070d, v = 0xf80331fe
kernel: MMU fault trap

pid = -1, pc = F80A98F2, ps = 2208, sfc = 1, dfc = 1

<register dump and kernel stack dump here>

panic: MMU fault
Stopped at _Debugger+0x6: unlk a6

I hope no one needs the stack dump.  I was tired of writing it all down.
If need be, I'll do it, but I think this info should at least clue a more
knowlegable person in on what might be happening.

Thanks for all the help so far guys.