After becoming a proud owner of Pioneer's DVR-K06 slim slot-loading DVD burner for 3 weeks, my drive's CD laser has failed and it now only reads and burns DVDs! In addition, I am also experiencing the dreaded drive sleep issue.
After further investigations, I found out that the drive sleep issue is not only affecting OS X, but also Windows and Linux, suggesting that it has nothing to do with the OS or the compatibility between the drive and the Apple motherboard. Besides mechanical failure (unlikely to cause this sort of problem), this leaves just one other possible cause: firmware bugs.
I want to survey DVR-K06 owners here who have experienced the sleep issue (drive disappearing after sleep) what firmware do they have in their DVR-K06.