Asus DVD-E616(16x, 48x)

[hmmmm]

I just got this a few days ago, but I'm wondering if something's wrong with it. I noticed that it worked pretty slow, so I started reading some reviews and took some tests in the Nero CD-speed. It read an original audio cd at an average speed of 16x...It read a data cd (a full 700 mb cd) at about 20x or something. Here is what they got at the test on this site: http://www.cdrinfo.com/Sections/Arti...ta-pressed.gif
When I tried testing the DVD read speed, I only got read errors with ALL my DVD's (none of them have any scratches), but I can play DVD movies. Someone please help me! Is this a hardware error, or can some drivers fix this (can someone give me a link to the latest drivers to this DVD-rom?) or can any setting fix it?
By the way, sorry about my English if it's very unreadable (I'm from Norway)..