I figured out my problems with the lockups -- a bad memory *slot*. I tried both my memory sticks (identical 512MB Crucial RAM, but bought a year apart) alone, in either slot, and there's a bad slot. In one slot, the machine ran fine under heavy load for over a day -- in the other, the same random lockup behavior that prompted my first post. So, since I can't use both sticks at once, anybody want a half-gig of RAM? Dan -- Ceci n'est pas une .signature. -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes Desc: Digital signature Url : http://mailman.mn-linux.org/pipermail/tclug-list/attachments/20061008/2ec1af7e/attachment.pgp