crazy sudden model image degradation!

Hiya,
When using Acad in 3D, after a while the model inevitably kicks into an odd pattern, which I've recorded here...
http://www.screencast.com/t/WGAG1DEzQjx
It happens when just manipulating the model and not after any particular command. Regen does nothing to resolve the issue, and I have to quit and restart Acad to get the model to display properly.
Any ideas?
Thanks...
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Autocad can have some display issues when you are short on memory resources. When you close the file and reopen it the stuff that you have deleted etc gets purged from the file.
Bob
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Okay,
Going to shut down all other apps to see if that helps...
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hmmm,,,
still happened with all other apps shut down...
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It is the resources use by autocad that is the problem not other apps. If it is what I am thinking of it should not occur in 2d wireframe view.
Bob
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gotcha...
I wouldn't see the problem in 3d wireframe as all the defects are in 3d aspects. Unfortunately, I have to work in solid views most of the time...
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Have you tried the file in a different computer?
Bob
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Well, I actually have had this problem for a year, but I didn't bother posting about it because I assumed it was my computer. When I tried it in another computer and it persisted, I knew I had a problem!
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