XP Task Manager

I went to go and check some processes in Task Manager and when I did I received the following message, " Task Manager has been disabled by your administrator". I'm not to sure how this came about or happend..as I'm the administrator. I checked MS website under the Knowledge Base and couldn't find anything..and also did a search on here. Thanks in Advance

Specs:
Intel P4 D845WN Mobo
Intel P4 1.5 CPU
384 SDRAM
Windows XP Home Edition

 

if you are virus free then open registry editor [Regedit.exe] and go to: [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System]
set "DisableTaskMgr" data to 0

 

Muddman..thanks for the help. By any chance do you know why that would have happend as to avoid it in the future?