Toast 11 DVD playback out of sync and slow

I have a dvd that I created and burned in Toast 11 that plays back slow and out of sync. The footage is 1080 24p compressed down to MPG2 in compressor. When I checked out the m2v files, they play back at normal speed. In the Toast 11 edit screen where I added chapter markers, I watched the video and audio which are synced perfectly, and playback is at a normal speed. I can't figure out why the burned disc plays slowly, anyone else have this problem?

There seems to have been some glitch with one of the video files, I ended up combining the audio and video file in MPGstreamclip, and then importing into Toast, and it plays fine now.