Black Big Pixels on Screen

Hi guys, this is my first post.
I bought a MBP 13' a month ago. It is my first Mac. I installed HL2 and after playing for a while (not always), I see big pixels on my screen as you can see in this video:
http://www.youtube.com/watch?v=HQumnHSHUmU
After rebooting, the pixels disappear and everything is OK.
Is something wrong with my MBP? Heat problems? Should I contact with Support?
Thank you!

iMac Intel 24" 3.02ghz / 4gb mem / nvidia | OS X 10.7.3 ( all updates where done ) | HDD WD Caviar 1TB
I checked the HDD 2 days before my mac crashed and it was free of errors, and yes I have my backups I'm just worried about the iMac and was trying to search for some advice before I take it to an AppleStore as I am not very fond of them here in Greece.
My guess was the graphics card as well.. :/
I tried the safe mode as well and again it does the same thing, it freezes with all those particles and never proceeds to the OS and pretty much after 1 minute it automatically shuts down.
Thanks for the reply rkaufmann87.

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Last edited by RiceKills (2010-07-06 23:39:27)

Black Big Pixels on Screen

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