Well, I'm encouraged. Thanks to BobF for pointing me in the right direction. I found the home page for Memtest86, pulled it off, built it, installed it in LILO and booted it. So far it's found 89 errors in just two passes. Both times the errors came from test 6. I'm going to leave it running overnight to see how many it clocks up. In any case, I think I've got some solid evidence to take the memory back to the supplier, who fortunately is just 5 minutes drive away. I'll write again in a few days time when I have more news. Regards, John -- To unsubscribe send e-mail to suse-linux-e-unsubscribe@suse.com For additional commands send e-mail to suse-linux-e-help@suse.com Also check the FAQ at http://www.suse.com/Support/Doku/FAQ/