Follow-up to my last post-- This time I'm the one unable to log on. The only recent change I've made to the system is that I finally got an rsync backup system working (yesterday). I have a script (that runs rsync to back up to another Fedora machine on the network) in the cron.daily folder. It appeared to work properly last night... Both the "disappeared" student and I were able to log on successfully earlier this morning (after the backup had run). Then, later, we weren't. I don't understand how these could be related, but the timing is suspicious. The lab has been working fine since I got it all worked out in eary September. If someone has the time to help me through this, the enlightenment would be gratefully received! Julie Enevoldsen Tilden School