Snow Leopard Graphical Glitch

[esposimi]

I was running Firefox (32-bit) today and I when I command-tabbed over to Echofon (running in 64-bit), I got some weird graphical glitches in the form of huge black borders. When I opened up Finder (64-bit) , the same glitch appeared as seen in the video. I took a screen cap and recorded it with QuickTime. Anyone know why this would be occurring? Hardware specs:

White MacBook (4,1) (Early 2008)
Intel Core 2 Duo T8300 (2.4 GHz, 3MB cache, 800 MHz bus)
2 GB of DDR2-667 SDRAM
Intel GMAX3100 graphics
Snow Leopard 10.6.1

Here is the screenshot:


I also have a YouTube video showing the glitch:
http://www.youtube.com/watch?v=a9lsTzd0VgU

 

[superted666]

Not seen this one before, could be a bug with the 64bit graphics drivers as i see your using 64 bit mode.