Hi, I have win 2000 pro on C: The problem is that whenever I press the control alt -delete combination 6 options come of which task manager is the only one which is frozen. I logged in Administrator account also but yet could not get task manager. A few days ago i had used Tune up utilities to configure settings for my PC. I don't know what is causing this. I have Zonealarm system suite 6.0631.003 Thanks in advance.