Hey i also have the same writer and also faced the same problem when i had just bought it.
now after a lot of searching,i found out that it had a speed limiting feature called
Power Burn
due to this the c.d.writer writes and reads by default at 40 x!!!!!!!
whenever u want to perform any function at 52 x,follow
the following steps.
- open the c.d. tray
- keep the eject button pressed until the l.e.d. starts blinking
- place ur c.d.
- again press the eject button to close.
- and now u r ready to burn at 52 x
to remove this feature,u can flash the firmware.But this can be dangerous.do only if u have professional help.even i have not tried flashing.
B.T.W.
Happy Burning