I will try to explain this the best I can. When I load the forum at the bottom I see a yellow box that says "Internet Explorer has blocked this site problems with security certificates." or something real close to that.
I also note that most of the time I can not hit the back arrow to navigate from thread to forum, instead having to scroll to the bottom and use the "go" function.
I also visit ar15.com and teamm14.com with no troubles, my wife also does her forums and the God awful tweeterbook networking thing with no troubles.
I tried clearing cookies and that did not work.
By the way this started last week sometime...