I've had problems ripping the odd CD here and there. However, I've found that newer drives seem much better at ripping copy-protected CDs. An older Sony I had at work (32x8x4x burner) wouldn't rip but a newer (48x??x??x) ripped it just fine.

Are you using an old drive (i.e. >1-2 years) to rip?
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Christian
#40104192 120Gb (no longer in my E36 M3, won't fit the E46 M3)