:-) Yeah, and it was a Duesie of a problem, too. Although once we got clear of the bad data from the console and my confusion about R5, and it became clear that in the Unix failure, the pure text was being damaged, from that point it was pretty straightforward to track it down (albeit one that needed detailed understanding of how V6 handled pure texts - and luckily I'd come to understand that part of the system a bit while getting the QSIC running). Fritz's lucky discovery, early on, that it was location dependent was also a big help. Noel