Windows XP Task Manager Disabled By Virus / Administrator

You will get task manager disabled message in following two circumstances:1. When you right click on task bar2. When you run taskmgr.exe manuallySo, why does this message comes?There can be mainly two reasons:1. Administrator disabled it manually.2. Your computer might be affected by virus/malware.If computer is affected by a virus, run an up-to-date anti virus scanner that will find out