So... at the risk of injecting some sense into this extended diatribe...
It's almost certainly not a 'SketchUp bug' - that is, something that is inherently wrong with SketchUp...
Many users of v8, high-end PCs and NVIDIA cards etc have no comparable issues.
So what is specific to your setup that might be implicated in the issues?
Cable length could be.
Unless using a much shorter cable has been shown to still produce the issues, then the current cable length is still a suspect.
The card's drivers might also be suspect. The latest driver might have some unexpected side effects; have you tried rolling back to a previous one? If so are these issues still the same ?
If this might be an NVIDIA card/driver bug then what have they said on their forums?
As the issue seems to occur when v8 and another app are loaded in tandem does the unloading of one of them relieve the issue ?
What has been said in the other app's forum ?
Does this issue occur on all PCs in your organization that use the same card/drivers/v8 etc. If not, then perhaps it's a specific System / configuration issue ?
Issues like this are difficult to track down, and are often the combination of several overlapping minor problems, seemingly unrelated at first sight.
They can also manifest themselves in other totally innocent applications.
This doesn't mean that SketchUp v8 is innocent, but it certainly doesn't demonstrate that it's a 'SketchUp bug' either.
The guys here have no reason to 'hide' anything. SCF is independent of SketchUp, those offering advice do so freely and in good heart. Falling into side arguments about this being a bug or not, or trading insults about whose got the bigger dick better experience, doesn't advance a resolution of this issue on iota.
Get back on track please...