I'd strongly suggest downloading Glary Utilities from http://www.glarysoft.com/ they have quite a few nice, easy to access tools for administrative needs. One of which is "Internet Explorer Assistant" located in the System Tools tab. While it's simple enough to access most of these control in many other ways they have a quick and clean U.I. for managing I.E. settings. It lists browser helper objects, tool bars, explorer bars, context menus, buttons, active x objects, and hijack restore all in one spot. I am not sure that it'll help you find whatever is causing your problem, but it may be worth a shot if something is loaded into one of those areas that should not be. It's free unless you want to get the pro version which has a few more features and can be used commercially.