Comment 4 for bug 577465

I concur with the other users.

Ubuntu 10.04 LTS has serious compatibility problems using DVDs that are burned by Vista's internal burner.
I doubt that Windows 7 would accommodate Ubuntu by using compatible DVD standards.

It gets worse: a DVD burned by Roxio Creator DE 10.2 is also not readable by Ubuntu 10.04.

I have wasted 5 DVD+R disks to try to get even one format to be readable on Ubuntu 10.04.

However, fortunately Ubuntu does read and play DVD movies (I played Fantastic4, II). Ubuntu calls the format simply as UDF.

There are problems with with the lower UDF format (version 1.02) that was to be compatible with older OSs.
The newer UDF formats did not seem to work either. (UDF 2.00, 2.5, 2.6) I cannot completely substantiate this,
because Ubuntu will not tell me what version of UDF format is on any DVD. It calls the ones that work UDF.
It is Strange that Ubuntu can read the Windows Vista OS Setup disk (it calls it UDF), but cannot read the ones burned on Vista, format version does not seem to matter.

As long as Windows is used by billions of users, Ubuntu must be compatible with it!

Speaking of CD/DVD compatibility, the fact that Linux and Ubuntu do not use drive letter mounting, nor seem to have even attempted such, but Windows does, is already a big blow to Ubuntu.
You see, in Windows, I can create virtual CDs and DVDs, and the programs will run without an actual CD/DVD Drive.
Without drive letters in Ubuntu these Cds/DVDs will not work, nor do virtual disk drives work, not even with wine. - I had 15 CDs/DVDs mounted at all times, and they would mount automatically at bootup.
Now with Ubuntu 10.04, I cannot use my $1000s of Windows disk programs, - but now I cannot even read Windows created DVDs.
I am forced to re-installed Windows Vista to make this work, unless the Ubuntu masters can see the necessity
of being compatible in these very important OS issues, and have the will to quickly find a solution, especially since this version of Ubuntu is an LTS.

I really love Ubuntu, and many of us hope that it will usurp Windows 7 in the near future.

If I broke Launchpad protocol again, I apologize. (and I do not believe in karma, but I believe that humans can work together, to accomplish something good and useful, such as Ubuntu 10.04 LTS)

BavarianPH,
Ubuntu forever!