Might be something in the 3.9 rom update, one possibility would be to use the "SKIPROMMODULES" tag to weed out the updates until it stops crashing.
F.e,
SetPatch SKIPROMMODULES scsi.device ram-handler exec.library
etc... I *think* there is a way to just skip it entirely with an easier command, but I just can't remember. I'm sure someone else here will know.
Is your 030 card overclocked? It's possible that something in 3.9 could trigger an otherwise unseen HW failure.