Video track randomly glitching and hanging during playback

not sure if this should be here or in the compressor forum, appologies for that....
I am building a fairly simple DVD with the main track being 35 minutes and then the "bonus features" consisting of one track with about 12 chapters and stories for the "play all" button...
Anyways, the extra features seem to play fine but the main track seems to be randomly glitching and/or hanging up during playback...sometimes near the beginning, sometimes near the end, totally different experiences on different DVD players as well as the same player at other times...
Does anyone have any ideas as to where I might begin to diagnose this? I have built many similar DVDs in the past but have not encountered this before and need to be quite confident in the master before we press 10,000 copies!
I have encoded all media in compressor using "90 Minutes Best Quality" setting..

Whoa!!! I'd back up here and make sure you have your "T" s crossed before your continue with 10,000 discs! What were your bitrates for the main track and Bonus features? Did you use AC3 audio? DVD has a bitrate ceilings of 9.8 for video. Its also important you check your bitrates in a viewer to makes sure your OK.
Bitrates are the most crucial part to control in DVD.
http://www.videohelp.com/tools?toolsearch=bitrate+view&Submit=Search&s=&orderby= Name&hits=50&convert=&dvdauthorfeatures=

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Video track randomly glitching and hanging during playback

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