CHAA006%vaxb.rhbnc.ac.uk@Cs.Ucl.AC.UK.UUCP (01/30/87)
It sounds very much as if your disc is going off-line autonomously, just for a brief period, then coming back on-line again. If it's the system disc, it will try to mount-verify, but fail and lock up. I think it's time you called in the engineers! ** Phil.