I'm syncing the video with an import .wav audio file. It's fine when viewing before export, but when I export in any format (avi, mpg, etc) the audio is no longer synced with the video. It gets worse as the video continues.
Same problem here with NTSC video. Had to get a copy of MEP16 to burn the DVD we spent 12 hours producing in MEP 17 so it would stay in sync. If you are using MEP17, try downloading the new build version 10.0.9.4. That fixed my problem in MEP17.