8.3-R cannot mount non-BSD burned DVD

[Jin Guojun]

This problem seems having been there for a while, but was not pay
attention to it till now.

Most DVDs burned under Windows machine cannot be mounted on FreeBSD
8.3-R. It gives following error:
 
# mount /cdrom
mount_cd9660: /dev/acd0: Invalid argument
 
Some of those DVD can be mount, but no content can be found:
% df /cdrom
Filesystem  512-blocks   Used  Avail Capacity  Mounted on
/dev/acd0      4687968  4687968        0   100%    /cdrom
% ll /cdrom
total 4
dr-xr-xr-x   1 root  wheel  112 Jul 13  2009 ./
drwxr-xr-x  24 root  wheel  512 Sep 25 23:11 ../
-r-xr-xr-x   1 root  wheel  135 Jul 13  2009 readme.txt*
 
Searched bug report, but did not find related report.
Does anyone have seen this problem? If so, is any working around for
this problem?

-Jin