My superdrive started to get temperamental with the maxell cd-rs I had previously used without problems. It now accepts some and spits out some (that is, after inserting the cd it makes the usual noises while "checking media", then ejects the cd). So I bought a cake tub of Taiyo Yuden cd-rs, which it won't accept at all (I've tried about 15, from different parts of the stack). It reads CDs (both commercial and CDRs) and DVDs without problems and burns DVDs also without problems (Taiyo Yuden DVD+R). Can anyone help me figure out where the problem is? The macbook is a 2Ghz Intel Core 2 Duo and I bought it 8 months ago. It has the SuperDrive update 2.1.0 installed.