The Honorable dadanox wrote:
You may want to go back to a single monitor config and then delete the folders Tomec mentioned, as well any addons. It will probably straiten it out. Also try resetting your video options back to default.
QFT, if you did move it off-screen probably the only/easiest way will be to delete the WTF folder which contains basically all your addon settings, so everything goes back to default. HOWEVER, even under a single monitor it is possible to drag it mostly off-screen.