Has anyone seen the following symptoms?  It has been suggested to me that the 
ncr driver is weak, and that it may be the cause of this problem.

Configuration:

	DEC Venturis GL 6200 (Pentium Pro, 200MHz)
	144 MB RAM
	NetBSD 1.3.1
	ncr0: Diamond Fireport 40 (53C875J)
	    sd0: Quantum Fireball TM2110S (slow narrow)
	    sd1: IBM DCAS-32160W (ultra wide)
	    sd2: Micropolis 3391SS (ultra wide)
	aha0: Adaptec 1542
	    st0: tape
	    cd0 - cd6: CDROM changer
	(some other hopefully irrelevant stuff)

Problem:  When I do

	cd old
	tar cf - . | (cd ../old; tar xpf -)

with both the "old" and "new" directories in a FFS partition of sd2, some of 
the files in "new" get corrupted.  In the two files I examined, the corruption 
was either 8KB or 16KB, contiguous, starting on an 8K boundary.  The 
filesystem blocksize is 8KB.

Has this appeared before?  Any thoughts?  (Don't just say "run 1.3.2."  I was 
cloning my source tree to upgrade it to 1.3.2 when I saw the problem.)

	--Ed