GPUs freaking out a little on me...help?

[DrPop]

Guys, I'm a bit unsure what's going on with the DrPop rig today. I can't afford any more fires and rebuilds right now, LOL!

I'm getting this message: GPUs have become unsuable; disabling tasks.

What the heck is that supposed to mean? Rig "seems normal" I mean fans going like crazy here in the back room, and you can surf the 'net on it, do anything normal...with this exception I just noticed. If you right click on the desktop and then click on "Catalyst" for the control center, it never comes up.

This is the AMD 1100T CPU on ASRock Deluxe 4 mobo w/ 8GB DDR3 1600 RAM. No O/C on any of that. Running ATI HD5870 with mild O/C, and NVIDIA GTX 465 with mild O/C.

Ideas? I'm a bit stumped and running out of steam after having to rebuild Kat's rig last night for the new GPU in there...arrgghhh...two nights of 1 to 2 AM in a row, and I'm gonna sound like a Pirate these days, LOL!