Has anyone tried burning DVD-RW or DVD+RW disks in an iMac G5? The burner is a Matsh*ta UJ-825. I put a CD in and Disk Utility reported the drive's capabilities as including DVD-R, DVD+R, DVD-RW, and DVD+RW. But I know people have had problems on Macs burning to DVD-RWs and especially DVD+RWs. I'm considering buying a pack of DVD +/- RWs, but I want to make sure I'll be able to use them.