Error when closing down computer

A week ago I installed McAfee QuickClean from a disc issued with Computer Shopper. Later I decided to uninstall it, but ever since I have been having trouble closing down my computer, every time I want to shut down, up comes a window headed 'Outlook Express FoldSync Window Class' asking me to either 'wait', 'end task' or 'cancel' and the only way I can get my pc to shut down is to click on 'end task'. I did ask zdnet Help & How to for help, but they gave me a site on Microsoft for me to print out, but it was about 80 pages long and being a 'silver surfer' I found it way above my head, so still have the problem.

My pc closes down as normal when I have just used the pc, but when I have been on the net and used emailing, that is when I have trouble closing down my pc, I can close down from the internet, which clicks off as normal but when I try to actually close down my pc that is when I get this window coming up, and I am worried that I may be damaging my pc.

Is it possible for anyone to help me in easy steps!! as although I love my computer I am in no way an expert.

 

The only thing I can find for FoldSync seems to involve this software...

http://www.funduc.com/folder_synchronize.htm

If you have that installed you might try removing and reinstalling it if you wish to keep it. Or just disable it.