IE makes "click" noise and short pause before closing

Hello, I recently discovered that whenever I close an Internet Explorer window I hear the navigational "click" that you hear when clicking on a link. There is a very short pause then the window closes. This never used to happen before, regularly when closing a window there is no sound and it instantly closes. I have run a scan with SpyBot, PestPatrol, and my antivirus but nothing comes up. Anyone know how to get rid of this closing "click" and/or what it is??

 

nah that aint it, but I found out what it was..thanks anyway

 

It was because of some "tweaking" utility that was installed and forgotten about....when this was uninstalled, everything was normal again