I got so fed up with this happening to me when using Nero, that I now go through a different process when burning to DVD.I triec different players, different versions of Nero, all the various Nero settings, different discs, but nothing stopped the synch problems.
Download a program called WINAVI and use it to convert your movie to DVD before using Nero.This will stop the synch problems, and is so much quicker than letting Nero do the Transcoding. Converting a 700mb file using WINAVI takes about 20 minutes, and then it only takes Nero about 5 minutes to burn to DVD Disc,much quicker than the usual 3 hours Nero takes.
To be honest, I have moved on from burning to disc, and now have a dvd player which has a USB port, and I can simply put the movies onto my 4gb USB Pen Drive and plug it into the dvd player and watch the movie on tv.Also, I recently bought a 500GB external drive that also doubles up as a media centre, and all I do is plug the drive into the scart on my tv, and use the drives remote control to scroll through and choose which file I want to play.