I guess we are the only three having this problem, but it still doesn't work for me. I have 3188. Mac Pro. Built In DVD (standard). I have CD/DVD enabled and Connect at Startup Enabled. The drive shows up as a DVD R/W drive with a recording tab, but if I try to burn from Windows Explorer, CloneDVD, or Windows Media Player I get an error. After that, many times, the Drive will only show up as CD/DVD and not a burner.
I wonder if it has anything to do with AnyDVD running in the background. I'll try disabling that and see if it helps.