Hi...after I start to use xp pro (sp2) for a while (10-30mins) I will not be able to open anymore application or shutdown..if the application is already open i can still continue using it but If i close them I won't be able to open it again and i can't open the new apps either,,when I double click the shortcut or start>all programs> and click on the apps i want to open...the mouse cursor will turn to sand clock for few second and back to cursor ...like nothing happen..same with shutdown or restart too..Ctrl+alt+delete won't open the task manager window as well..no error message or blue screen..the computer is not hung..just that i can't open anything anymore..(i'm thinking maybe .net framwork is causing it.eventhoug i updated to .net framework sp1)..i just have press the restart button ,,then the problem occured time to time..any genious can solve this?????? thanks

You Cannot Start Programs (.exe Files) When Your Computer Is Infected with the SirCam Virus http://support.microsoft.com/default.aspx?scid=kb;en-us;311446 Can't open EXE files http://support.microsoft.com/default.aspx?scid=kb;en-us;555067 -------------------- How to Perform a Clean Boot in Windows XP To help troubleshoot error messages or other issues when you cannot determine the cause of the issue, disable common startup programs, settings, and drivers to eliminate possible software conflicts when you start Microsoft Windows XP. This procedure is known as "clean booting." How to perform advanced clean-boot troubleshooting in Windows XP and that one is a heavy duty article. Print the articles for reference.