i think this is the same thing as what i got a while back....except mine was a little hand with stop sign.........all i did was allow pop ups on this web site and it never did again
is it happening when u try and open pm's in another window etc..?
Its a Privacy Report icon, if you look in Tools/Internet Options/Privacy and see what you cookies slider bar is set at. If you set it at Block all cookies, you can't reply to any posts, (I tried it and it wouldn't let me), set it back to accept all and its fine again. If it shows up, double click, it shows all the cookies its blocked. It ain't spyware, it's part of windows.