my ltr 52327s won't let me burn higher than 4x, this problem started two days ago . if i try to burn at its regular 52x i get a power caliberation error in nero, i've tested different disks 52x,48x, and 4x. the 4x burned fine as 4x but the 52x and 48x didn't, i then tried 48x at 4x and it worked fine. also i tried burning in a different program winamp and it still wouldn't burn at 52x. i'm thinking it might be the drive but if anyone has any clues fill me in. thanks in advance.