@tokyoracer
I can't help you, I think, but I'll say that I have had no such experiences with my Blizzard 030 (in A1200 running KS3.0 and WB3.0/1 software.) Other than the card there's only the floppy and a 2.5" HD in there, and I use a quite low output Amiga PSU - only about 40W I think.
The card does take a brief moment to do some things though, checking the RAM and possibly remapping the ROM.
If you end up suspecting that your SCSI kit is faulty, you could try sending it to me for extended "testing" ;-)
