Not sure if this is only related to IE 9, probably not, as I just noticed this happening with Editing or Replying to a post, the Ad is not displayed where it should be, instead its blocks the "Submit new Thread" button and/or Canel buttons. Also. occaional, ad not being displayed at bottom. This is troublesome, as it you go to the main thread (by browser back boutton, or Cancel) try again to post, the ad it still blocking the buttons. Sometimes not completely. but most times. . The only way around this is to go to "Advaced" section.