+<p>Update 2011-09-18: I got a tip from Konstantin Khomoutov about the
+readom program from the wodim package. It is specially written to
+read optical media, and is called like this: <tt>readom dev=/dev/dvd
+f=image.iso</tt>. It got 6 GB along with the problematic Cars DVD
+before it failed, and failed right away with a Timmy Time DVD.</p>
+
+<p>Next, I got a tip from Bastian Blank about
+<ahref="http://bblank.thinkmo.de/blog/new-software-python-dvdvideo">his
+program python-dvdvideo</a>, which seem to be just what I am looking
+for. Tested it with my problematic Timmy Time DVD, and it succeeded
+creating a ISO image. The git source built and installed just fine in
+Squeeze, so I guess this will be my tool of choice in the future.</p>