I have had some problems recently with buffer under run while buring CDs on my iBook. So I decided to try to burn to a CD-RW, after all if the burn fails I could just erase the disk and retry.
Well thats what I thought. The problem is that when you insert a disk OS X tries to mount it. But instead of warning it cannot mount it, it keeps on trying, *forever*. The only way I have found to stop it is to eject the disk, although it can take sometime to respond to the eject key being pressed. So there is no chance to erase it.
Oh well I suppose my wifes windows box has to be useful for something