10.7.2 Bug, Showing Data DVD as blank, but it's not!

Question

I have a brand new Macbook Pro and I've encountered a baffling problem.  A data DVD (containing multiple PDF's) shows up as a blank writable disc on this computer.  I decided to run Parallels with Windows 7 (on the same MBP) and the disc showed up with all the files intact.  So I figured it wasn't a hardware problem.  Then I tried the same DVD in my older macbook (2008 model) and Mac Pro desktop (both with OS 10.6) and the disc works perfectly.  So it's not a general mac problem either, it appears to be a 10.7 Lion problem.  I then uninstalled Parallels and Toast just incase they were to blame...no luck.  I have tried other data DVD's in my new MBP and they work perfectly, so I tried to figure out what format was messing with Lion.  Using Snow Leopard, Toast & my old Macbook here are my findings regarding the format of the culprit DVD:
Medium Type: DVD-R
Space used: 4.38 GB
Diameter: 120 mm
Layers: single
Manufacturer ID: RITEKF1
Content:
Title: Feb 22 2011
Content Type: Data
File System: UDF
Tracks: 2
Sessions: 2
Details:
Session 1 Start=0, Size 1.16GB
Track 1 Start=0, Size 1.16 GB
UDF  Feb 22 2011
UDF revision 2.01
Session 2 (open), Start= 645216, Size = open
Track 2 Start = 645216, Size = 3.15 GB
UDF  Feb 22 2011
UDF revision 2.01
So as you can see it's a multisession DVD, which you cannot create under Lion but you should be able to read it.  It's also UDF format, etc.  Does anything else look fishy?
Anyway, I brought the MBP to the genius bar today and showed him my findings.  I tried the disc in his MBP and it also appeared to be a blank writable DVD. He believes it is a Lion bug and had nothing more to say.  Any thoughts from the techies out there?  Anyone have a similar experience?  I would love to have my results duplicated so that I can make apple aware of this bug.  Thanks all!
My specs:
MBP 2.2 GHz Intel Core i7
8 GB 1333 MHz DDR3
OS 10.7.2

Answer 1

Cattus Thraex,
I know that you enjoy posting on the forums, but please only post relevant information.  If you've read everyones post in this thread you'll notice that the discs in question have all been tested on other operating systems & other hardware, therefore it's not necessary to write "then you may have a hardware problem" or "May also indicate a system corruption".  That's incorrect information and it shows that you have not actually read the other posts before replying. 
FYI, I've never actually "called anyone out" in a forum.  I generally think it's a waste of time and it usually solves nothing.  That being said, I started this thread so that we could get a solution from Apple and I'd like for it not to be diluted by misinformation.  Please help us Apple!
Your last post is really what made me write this reply.  Your basically saying that our concerns are useless because this technology is antiquated.  That we should not be asking a question like this at all...
Let me break this down for you so you understand where we're coming from...
You wrote "Open Session Disks have always been problematic in Mac OS, and not recommented. Open sessions made sense 10-12 years ago, when rw-CDs did not exist, and a blank CD cost a lot "
Thanks for the info, but all of us in this thread have been given a disc by a friend of or a colleague that we cannot open on Lion, but it opens everywhere else.  We did not choose this format, but apparently someone else did and we must deal with it.  We all know that the technology is old...this is not helpful info.
you also wrote "Now, open sessions are entirely senseless, and I do not wonder if Apple completely drops support for this outdated method."
O.K., that again for the non-advice.  Again we didn't choose the format, someone else did.  So basically you're saying that we are silly for asking this question.  Are you still able to open a microsoft word file from 1993?  The answer is yes...
Anyway, from the information I've gathered from your posts above, you will not thoroughly read this post either.  I fully expect an angry response that has not been well though out, due to the lack of comprehension of what I'm saying here.  That being said, please suprise me by posting nothing at all...that would be spectacular!