Comment 6 for bug 304954

I can confirm this is an issue with Hardy Heron on a Dell Latitude 610. The internal DVD drive will play audio CDs no problem, however when trying to play a DVD (Correct region, works fine in Windows XP ;) ) I get the buffer errors in dmesg:-

[ 160.488507] UDF-fs: Partition marked readonly; forcing readonly mount
[ 160.518886] UDF-fs INFO UDF 0.9.8.1 (2004/29/09) Mounting volume 'STARDUST_UK', timestamp 2008/01/08 07:48 (1000)
[ 164.970169] end_request: I/O error, dev sr0, sector 549088
[ 164.970180] Buffer I/O error on device sr0, logical block 137272
[ 76.228833] end_request: I/O error, dev sr0, sector 663824
[ 76.228843] Buffer I/O error on device sr0, logical block 165956
[ 76.228851] Buffer I/O error on device sr0, logical block 165957
[ 76.230733] end_request: I/O error, dev sr0, sector 663824
[ 76.230739] Buffer I/O error on device sr0, logical block 165956

And both VLC and the default media player will not play the movie.