When using Limewire on an XP -PC, I was told:
"Task Manager has been disabled by your administrator"
It turned out to be malware in the registry.
Limewire may be innocent even if I think it is involved since I never have encouterered this before and I got it shortly after I started to use it.

Has this happened to you?

If this is done deliberately, I dislike Limewire even if it is done to improve uesful downoads from my machine? Don't you agree?

There are ways to solve this:
http://216.239.59.104/search?q=cache...disabled&hl=no

Another way is to do a roll back.

Nothing in LimeWire would cause that.

You perhaps got a file that had a little something extra and was not what you expected. Please run a virus check on all files you download..this will save you heaps of trouble.

Even then, you won't escape being infected again at some point.

You can always try online scan at housecall if your virus checker gets disabled.. keep the link to housecall in your bookmarks, you never know when you might need it

http://housecall.trendmicro.com/

__________________
~Kath~
Always judge a person by the way they treat someone who can be of no possible use to them

I doubt very much that LimeWire is deliberately stopping you from opening the Windows Task Manager. Also do you have multiple accounts on your pc? And do you have administrative rights?