Why am I getting a message that others are logged on to my computer when I'm turning it off?1 person needs an answerI do too

If there are no other User accounts then there's the possibility that your computer has been hacked. What Service Pack level is XP now on ? ( Press the Windows key + R simulaneously. Type in winver, click OK to see the SP level )Have you installed all of the Critical Security updates for XP ?Are all of the programs and applications up to date ?What is the installed antivirus; is it's subscription current; are it's definintions up to date; was anything detected by it the last time the system was scanned with it ?MowGreen Windows Expert IT Pro - Consumer Security