Hmm, if you are burning the disk/making the ISO in K3b as a Video DVD Project, then I would be interested to see if the resulting ISO itself will play properly before burning it to a disk. Usually you can use (if you have xine or kaffeine installed):
Code:
xine "dvd://path/to/your/dvd.iso"
or
Code:
kaffeine "dvd://path/to/your/dvd.iso"
and see if it plays correctly...
Then you would know that it's not a problem with the ISO image.