i just bought an optiarc 7170a earlier this month and have tried to burn dvds with sonic recordnow. except in the dvd write speed option, it only shows 1.0x and MAX. does anyone know why it doesn't show other write speeds (2.0x, 4.0x, etc.)? i am not sure if the program is not recognizing the other speeds or if the drive is not sending the correct information. thanks guys.