Trouble with Re-compressing

[blkrx7]

I've done my best to search around, but found little on this problem, and of course my serach terms have been rather generic at best as it's an odd problem.

After a week or two of successful re-encoding (purchased, not trial) to a pocket-pc sized wmv's, all of a sudden every re-encode I do ends up, what could best be described as slow-motion sound, and 0.5-0.25 Frames per second.

I've tried several diffrent (un-altered) re-compression settings, the re-compression goes all the way through, takes (say) 20-30 minutes for a 30 minute episode, but looks horrible.

It records from source just fine no matter what setting I choose, plays back smoothly, it's just the re-encoded wmv files that turn out odd.

Anyone run across this before?

Paul