This question sounds stupid, but is it OK to activate DMA for this drive? I was told for most CD-RW's, if the system properties doesn't have the DMA box checked by default, it's probably not a good idea to check it. Anyways, I did anyway, and the box is still checked at startup. No mention of this in the drive manual; checking Yamaha's website turned up nothing. Drive still burns fine (actually the buffer level improved), but I'm just wondering.