To Halim: I use a nexus card and the dvd plugin seems to work here. I have not noticed any sync problems. I also have only played retail dvd's, no self-burned.
What version of dvd plugin you are using?
I'm also using ""0.3.6-b03""
# rpm -qa | grep dvd libdvdnav-0.1.10-4.20070503.lvn6 libdvdread-devel-0.9.7-2.fc6 libdvdcss-1.2.9-4.lvn6 libdvdcss-devel-1.2.9-4.lvn6 dvd+rw-tools-7.0-0.fc6.4 libdvdread-0.9.7-2.fc6 libdvdnav-devel-0.1.10-4.20070503.lvn6 dvdauthor-0.6.14-1.fc6
I found the original thread from when I had these problems too. Attached a patch. http://www.mail-archive.com/vdr@linuxtv.org/msg04596.html