This kind of bugs can be file dependent or executable binary dependent. Provide a sample buggy file and let us to try to render it in other machines. That will confirm that the bug is from the executable binary.
-G
I'm wildly guessing here, but this kind of warped image can be the symptom of a badly corrupted file system. It happend when a) the volume is heavily fragmented and b) there's not much free space left and c) there are errors in the directory tree.
Have you run a diagnosis program over the volume you render to?
I have seen this when rendering to a single animation file and to a series of png still images, On my system, it was the lack of RAM - ASP does not clear its buffer after rendering a frame so on limited RAM machines, you get corrupted files. As others suggest, not having enough swap space on a disc will also cause overflow issues.
I solved my low RAM issue by rendering in png batches, from 1-50, 51-100 etc, Combining the image sequence in Premier, AE or Combustion never caused problems.