Um, WTF?

psychedelic graphics error

I installed the Leopard 10.5.2 update today and tonight my computer started wigging out. It happened when I was copying files from a USB thumb drive, but continued after I ejected it and quit all applications. I got a screen shot of it which tells me my graphics card is not on the fritz and my computer is not overheating (because it was software related). Today I installed the newest build of parallels (5584), the newest build of webkit, and the 10.5.2 Leopard update, so it’s hard to tell what caused it.

The apps I had running were:

Finale 2008
ITunes
Parallels
Safari
Webkit
Firefox
Textedit
MOTU Audio monitor
Google Desktop
Quicksilver
Slimserver
Logic Pro
LAMP

I have no idea what caused it. Anyone else experiencing this?

-edit

Immediately after you install the 10.5.2 update, if you run software update again, you get an option to install the Leopard Graphics Update 1.0. Whether or not this fixes this problem time will tell.