I also have a IIci running NetBSD from an external Quantum 730 drive.  I 
have only had it lock up once in about 4 or 5 days during a disk access 
while trying to read mail in elm.  I was paging through a message and 
suddenly the drive light would not go off.  I am using the netbsd-scsifix 
kernel (GENERIC#14) off of puma at the moment.  Perhaps the fix to the 
SCSI driver is not quite done yet?  I have not tried any other drives 
yet.  I have a 40 MB Conner which I was planning to devote to NetBSD as 
well as part of the 730.  I'll have to try it and see.

Later.

-- 
Colin Wood                                      ender@is.rice.edu
Consultant                                        Rice University
Information Technology Services                       Houston, TX