I just got some Verbatim 16x printable +r's. I got excited about how quickly I now be able to burn dvd's. I tried one dvd so far and it took 9 minutes and 46 seconds. I burn 4x Taiyo Yudens at 8x speed in about the same amount of time. What the hell?! I have the stock 3.04 firmware. Should I try some other firmware or could something else be the problem? I have the nec 3520 and the media code for the dvd's is mc 004.