Dear Friends, I'm using this Samsung's Cd-RW [40x-12x-40x] SW-240B since last 2.5 yrs, along with Nero Burning Rom 5.5. Had no problem, but since last few weeks I'm facing two queer problems: 1. CD-Rs r not being burmed at a speed more than 24x and CD-RW r not being burned at more than 4x !! CD-R Brand :Memorex CD-RW.. :Sasmsung [4x-10x] Moreover the Drive doesn't recognise MoserBaer CD-RW [4X-10X] On attempt to burn on the MoserBaer CD-RW ,"Disc Speed Error" erroe msg is thrown. 2. 2nd sessions written on Multisession Disc r not recognised. Also at times the Cd_RW stops working after giving a "Power Calibration Error" ! Restart solves it. ANy ideaS?