MacPro causing distorted video

I am having problems with my MacPro outputting to my TV.
I use a 32" Philips LCD TV as my primary display, and is connected via DVI to HDMI cable. previously i had been using an iMac 20" to connect using the same TV and same cable (with added miniDVI to DVI adaptor). This resulted in no problems at all.
But now with the new MacPro connected instead.....I am getting video distortions occasionally. It looks like the video is not refreshing fast enough and i see a weird horizontal distortion bar run across an area of screen for a second and then its fine again for a while.
Any ideas on how to resolve?
i have SL set to 1080i for screen resolution which should be correct too.

I notice you started another thread with the same question as before (word for word!).
Google results
I would ask in Logic Pro Discussion (I couldn't find anything on a quick search) except for:
Video dropouts
Anyone using Mac Pro for more than very light or casual use, I would strongly recommend 4GB RAM. Apple even goes so far as to say that with FCP, it is essential for performance to have a 4 x 1GB (2 x 1GB on each Riser) to enable full 256-bit quad-channel memory bandwidth. The other part, to make good use of four internal drive bays.
Would the Radeon X1900 offer any benefits, though?
Mac Pro 2GHz 4GB 10K Raptor RAID Cinema HD Mac OS X (10.4.9) WD RE RAID Aaxeon FW800 PCIe MDD-G4 APC RS1500 Vista

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Robert,
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Please HELP!
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p.s. you can answer to my email as well: [email protected]
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Video Captioning Causes Major Video Distortion

So,
This is a good one. I have a number of videos in an
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- B

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i need help!
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Welcome to iMovie Discussions.
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