writing huge files on DVD

[David Andel <andel@ifi.unizh.ch>]

Hi

I've made a strange observation:
I can write files up to ~100M on DVD without problem (using k3b, which 
in turn uses dvd+rw-tools).
But everything >1G gets written corrupted and takes up only about 15M on 
the DVD, even though k3b does not find any difference while validating 
after the write! This is the case either way if I use + or -RW.

Is this a basic feature of DVDs? Is there some size limit to files? Or 
is here actually something wrong?

Thanks,
David