I am running Win 2000 SP4 and have been getting Systemced errors on boot about every month or so. My computer will freeze and when I reboot it stops with the Systemced error. I can fix it but it is a hassle. Doing some research it looks like the problem is caused by the hive being too big so I have been watching it. I compacted the hive on 5/10 to 4 meg from 11 meg. Now on 5/15 it has grown to 6meg. I have Norton current and system is clean, I ran a rootkit audit that came back OK. The only thing I do regularly is play poker on line almost every night.