IE 'stops' every time

Using IE7. Lately when using IE explorer, after loading any webpage the blue bar at the top fades out and the only way to make it work again is to left click the mouse. Also noticed the same thing happened today with OE, but neither comes up with a 'not responding' box, they just seem to freeze. I have had problems also with programmes/folders 'not responding'. Could this be a bug/ virus of some kind. I run super antispyware, malware bytes and avg9 every day. Avg sometimes finds 'revsci' references and cleans them, but the other 2 come up clean. Thanks for reading and in advance for any help offered. hedley

See this article …. http://www.ehow.com/how_5026847_rid-adsrev…-revscicom.html

Download and install CookieWall. Keep the cookies for logging into websites (such as this), and delete the ones you don't want tracking you.
http://www.analogx.com/contents/download/N…ie/Freeware.htm

Right click on the icon to configure it, and Add/Delete to choose which cookies to keep.

Thanks for the reply. I have done as you suggested. There seem to be conflicting opinions on google search as to whether revsci is dangerous/malicious or not. Do you know if it is dangerous/malicious, or just an annoyance/inconvenience. Thanks again for the help. Much appreciated, as always. hedley