Strange "Candle" pixels on screen when using ISBoxer...

It WILL stay on the screen once I log in and no matter what I do it will not go away, and as I said before 5% of the time it doesn't show up at all and everything is great. I have tried turning on / vsync, same results. I know that my computer can handle the program / running 2+ clients at one time as I have done it before in the past, both with ISBoxer and other software. I am just wondering if there is a software problem or a setting I am missing somewhere. I searched the forums but didn't really know how to "describe" the problem so if it has been answered before sorry, I could use a link to the answer tho.

Any ideas ?