Second monitor displays weird colors

Hi there,
Yesterday I bought a Displayport to HDMI adapter (Mini DisplayPort Male - HDMI female) for my MacBook Pro 15" (Late 2011 version). I use this to connect my MacBook Pro to my Philips 32" television. Everything has been set up (I've adjusted the resolution of the TV to 1080p and put my refresh rate to 50 hz since my TV doesn't support 60 hz). But once in every 5 - 15 minutes or so, my screen turns green for a brief second and suddenly my background or whatever is on my second monitor turns in to weird colors. Sometimes it takes about 2 or 3 seconds and it switches back to how it normally was, but sometimes it takes way longer. I don't mirror my screen, I use it as a second display. But I can't figure out why the screen it switching betweens there colors and don't know how to fix it. I've looked it up on the internet, but couldn't find anything useful. So I hope you guys could help me with this.
Thanks in advance.

Bump.

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Yesterday I bought a Displayport to HDMI adapter (Mini DisplayPort Male - HDMI female) for my MacBook Pro 15" (Late 2011 version). I use this to connect my MacBook Pro to my Philips 32" television. Everything has been set up (I've adjusted the resolution of the TV to 1080p and put my refresh rate to 50 hz since my TV doesn't support 60 hz). But once in every 5 - 15 minutes or so, my screen turns green for a brief second and suddenly my background or whatever is on my second monitor turns in to weird colors. Sometimes it takes about 2 or 3 seconds and it switches back to how it normally was, but sometimes it takes way longer. I don't mirror my screen, I use it as a second display. But I can't figure out why the screen it switching betweens there colors and don't know how to fix it. I've looked it up on the internet, but couldn't find anything useful. So I hope you guys could help me with this.
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GeForce 8600M GT:
Chipset Model:          GeForce 8600M GT
Type:          Display
Bus:          PCIe
PCIe Lane Width:          x16
VRAM (Total):          512 MB
Vendor:          NVIDIA (0x10de)
Device ID:          0x0407
Revision ID:          0x00a1
ROM Revision:          3212
Displays:
Color LCD:
Resolution:          1920 x 1200
Depth:          32-Bit Color
Core Image:          Hardware Accelerated
Main Display:          Yes
Mirror:          Off
Online:          Yes
Quartz Extreme:          Supported
Built-In:          Yes
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http://discussions.apple.com/thread.jspa?threadID=1090395&tstart=60
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Second monitor displays weird colors

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