Lately, I have been returning to my computer after a couple of hours or more to find it has rebooted in my absence. I know this because the Zone Alarm and Clip Mate screens are visible and they are set to open whenever I reboot deliberately. I defrag and run a maintenance program each Friday night. And I may purge my temp and internet files oftener if they need it. I have noticed no other aberrations when operating my PC. I use WIN98 SE on a three year old Compaq Presario 5030. My HD is presently less than 50% filled. What advice do you have for the possible causes of my problem and how to fix it? Paul King - Users can unsubscribe from this list by sending email to 24hoursupport-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field OR by logging into the Web interface at http://web.tampabay.rr.com/spider1/24hrsupport.htm.