I have one system on my network that has a problem with Internet Explorer. Every time the operator opens the program, after a couple of minutes, it starts opening page after page of advertisements. I have tried clearing the cache, ran Pest Patrol,scanned for viruses after dueing a live update with NAV Corp Edition 7.60.926 neither found any problems that were not fixed. I deleted all the adware that Pest Patrol found. The home page on the system is MSN.com
What am I missing? What is causing the problem? How to clear it up?