IMac Display/Video card "error"

Hey ppl, just had the most random thing happen to my new iMac Core Duo 20" today. ive had it for under a month, and its the standard model from Apple. I had a few Apps open, and was using VLC to play a video file.... suddenly, the entire display goes washed out(very bright white/yellow) with a few colored bands going from top to bottom. I could hear the audio from the video playing...but i couldnt make the display get back to normal (force quit, etc). So i had to do a manual reboot of the system and all was fine.
Anyoneelse here experience anything like this ? or anyone here know why something like this would happen ?
Cheers

this could be caused by any number of things. i would reset the pram holding apple-option-p-r and that might help. but i would also run the apple hardware test. you can do that by booting to your install disk holding the d key. could be the logic board. but could also be inverter, or video card. it could even be software related. i would definitely run apple hardware test though and see if everything checks out. [ 8 ) ]

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