Has anyone running 4.2BSD had similar problems?

[sls at allegra.UUCP]

We recently brought up 4.2BSD on our 11/780. Our system only has
one disk at present, an RP07. Yesterday, we started getting 
soft errors on our / and /usr filesystems, followed by hard errors
(OPI, DVC, ECH, DCK). These errors (which were many) occurred over
a period of 10 minutes. The errors ceased, and the system stayed up
for about 30 minutes, and then crashed. / and /usr were totally
scrogged, but our user filesystem escaped unscathed. DEC tested out 
the drive and found absolutely nothing wrong with it. I booted
Unix from the distribution tape and restored /usr. We have had 
no errors of any kind since then.
Has anyone running 4.2 had a similar problem?

                 Susan Shaw
		 BTL - MH
		 allegra!sls