Garbled output when dragging programs between monitors

[goldtoes]

Alright, I tried searching this one because I could have swore that I have seen it asked before, but I couldn't find anything.

I have had dual monitors for a long time, but this problem has only been occurring for maybe 6 months. Around that time I hadn't changed anything like drivers or anything to do with video, so I don't know what may have caused it.

Anyone experience this before or know how to fix it? The resolutions on both monitors are the same. The only way to get rid of the "garbledness" is to minimize the effected program and maximize it.

Thanks in advance.

/gold