I encountered the audio sync bug on a DVD with two titles having two chapters each. The audio gets about a second ahead of the video around maybe 5 minutes into the second chapter of each title, and by the end it's maybe two or three seconds ahead of the video.

But...

This only happens if the DVD automatically plays the chapters in order by itself. If I manually select the second chapter of either title there is no audio sync problem at all.

So...

...dunno...

This was encountered on a Philips DVD580M standalone.