Strange overlay

[Indy1204]

Hello. I have installed the latest Teamviewer on XBMCbuntu. Everything works great but when I boot up it places a strange overlay on the screen and I cannot click on it. The mouse cursor goes behind the small box. Any idea what this is and how I can remove it? Here is a picture of it.

http://i.imgur.com/hHonN4m.jpg

Thanks