For the last several months, I've had to start trashing my prefs every time I burn a DVD. Once I trash them, I'm good for the rest of the day, but the next time I need to burn, I get a "formatting failed" message. All other functions are working normally. Since it's predictable, I can work around it, but it's perplexing.
I'm using DVDSP 4.2.2 on a 2x2.26 GHz Quad-Core Intel Xeon, 16 gigs ram, OS 10.6.7.