Okay now that I have your attention with a catchy name. I have this cirle that appears on my display only in solidworks.
Attached is a picture seen in every file including a blank new one. I just got a new harddrive and a new 2009 reinstalled so I have no idea what this circle is, how it got there or how to get rid of it. So far SW has crashed once on a large assembly and I just checked my video driver and it is certified.
Any clues?
Are you using Win 7? This post might help you, or maybe not, looks like the same thing you are having though.
https://forum.solidworks.com/message/146258#146258