I think this has been covered before in a previous thread but I can't find it anywhere.
Several times now, after I mix down a multitrack session to a new wav file, I've found that - maybe 20-30 seconds in - the audio will very briefly cut out or skip. It's barely a millisecond, but it's noticeable. This will happen whether you mix down to a wav file or bounce selected tracks to a new track/wav file. Any word on why this is or how to prevent it?