Problems with dual layer DVD reading MBPro (2009)

Hello,
recently i wanted to take a look at a dvd that came with a magazine (for pcs, but that shouldn´t really matter here) on my macbook pro from mid 2009 (see http://support.apple.com/kb/SP541) with the latest version of osx.
Unfortunately, it didn´t succeed to read the dvd. only ejected it after doing a little searching and making strange noises.
According to the technical specifications this macbook pro should be able to at least read dual layer dvds. I won´t even try to burn one of those, because after doing a little research on the www i found a lot of entries with people going insane with the burning capabilities of macs concerning dual layer media.
Unfortunately i couldn´t find anything on the topic in the forums here. Also no official statement whether macs can or cannot cope with dl media. In my opinion, if it´s specified in the tech specs, then the computer should also live up to the expectations.
Are there any suggestions on how to go about with the matter of dl media and macs? Any information would be much appreciated. Also a notice from apple would be nice, this seems to be a matter (given, although probably not of top priority) concerning quite a lot of people and machines.
kind regards,
Reinhard Sommerer

Hello again,
well - thanks for the information. i would like to point out that the dvd i was trying to use was not for burning purposes. it was a medium that came with a magazine. out of my experience sometimes these work even better than home-burnt dvds, but that might be subjective.
anyway, tonight i gave it another try with the cleansed medium. apx. in the same condition as last time (had stored it in a safe place) and big surprise: this time it didn´t read neither side again. kind of a drawback - maybe tomorrow i´ll have more luck again.
so my hopes for an apple official to comment on this forum won´t be heard, i guess. although it appeared to me that last time here i had seen a user profile resembling an official apple profile. but i might be wrong, i´ll just keep on wondering about this so-called dl-drive.
kind regards,
reinhard

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http://baxnet.com/bs/picture6.png
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Problems with dual layer DVD reading MBPro (2009)

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