iMac creating nice art- no srsly, this is f*ed up.

[Bullox]

So i have an alu iMac 2,8Ghz 4GB ram, Radeon HD 2600 256mb, OS X 10.5.6. Sometimes after i wake it up from sleep i get screens like the one attached. If i aim right i can manage to restart it by guessing where the apple logo is, but mostly I have to hard-restart it. (hold on/off button). Once restarted, problem is solved for quite some time.
What the hell is happening, and how do I solve this?

 

[Smacky]

Looks like your graphics card is on the way out
Time for a new logic board methinks

 

[barkmonster]

So i have an alu iMac 2,8Ghz 4GB ram, Radeon HD 2600 256mb, OS X 10.5.6. Sometimes after i wake it up from sleep i get screens like the one attached. If i aim right i can manage to restart it by guessing where the apple logo is, but mostly I have to hard-restart it. (hold on/off button). Once restarted, problem is solved for quite some time.
What the hell is happening, and how do I solve this?

It's probably just your screen saver going wierd.

I have a star wars screen saver and it sometimes does all kinds of wierd graphical things. Don't worry about it, change to a different screen saver and see if that helps.

 

[Bullox]

I don't think its the screensaver, i have the word of the day standard one.
As u can see in the pic this is after waking up, i took the screenshot when in spaces, that is the grid form you can see. I guess i'm taking it to the apple store then, get this sorted out.

 

[miles01110]

I had this problem after installing/playing Quinn on my MBP. Uninstalled it and haven't seen it since...

 

[Jethryn Freyman]

Running the Apple Hardware Test would tell you if you have a hardware issue or not.