Audio & Visual issues after updgrade

I just got a new Mac Pro, after which, in the SD project I was working on in FCP5 1) the video started showing through the audio windows of the viewer and the audio waveforms disappeared. I updgraded to FCP6 (which I wasn't planning to do until after I completed the project) and downloaded/installed all updates.
The same thing is happening and at first I assumed this would be a common problem with an easy patch, but I don't see any other post with this issue. yikes.
Secondly, after upgrading to FCP6, the video looks fine on my monitor, but it looks lower rez on-screen in both the viewer and canvas, not totally low-rez, but slightly pixelating. I checked the sequence settings for the project and all looks the same as it was pre-upgrade.
Does anyone have an idea of what's going on with the audio waveforms and how to fix it? that is def. my biggest problem at the moment.
Many thanks in advance for any help and trouble-shooting ideas.

Wow, this sounds really weird.
Hm, I think the best solution will be to backup your data and to recover your system, because the update probably has confused your system so much that its making such things.
In my opinion maybe the only solution, because if you already tried to reinstall the drivers and to set your system to a earlier restore point and nothing happens this seems to be a really weird software problem. And try to avoid some updates. I know how this sounds but I do it too.
For example: I have 3 Notebooks, 2 with XP and 1 with Vista. On my XP rigs I just have servicepack 2 and its good how it is, works fine and perfect.
Cheers and nice weekend

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