chef, it was the firmware executable. Metallian, I don't have Intel Application Accelerator installed. I've tried the drive in 2 different machines, and the firmware update program did not work with either. They are nForce2 based machines.
And, chef, there is no exact error messages. When the first couple burns failed, it said "Write Error". I haven't had a bad burn since then, so I'm satisfied that specific problem is solved.
I burned a number of DVDs last night. All on Yuden002's, and they all burned very well and very fast. I'm happy about that aspect of the drive. It also seems to be pretty fast with Secure Mode EAC extraction with C2 enabled. Also very nice.
The outstanding issues are that the TDB firmware update program doesn't work for me within Windows. I don't have a floppy drive installed for either machine, so I would need to create a boot CD to flash with the DOS based flasher. Seeing as I decided I am going to keep the drive, even though it doesn't burn CDs at the speed at which it is advertised to, I flashed the drive with that Liggy and Dee firmware, or whatever it is called. That flash worked very well.
Basically, its a good drive for DVD burning, no question. However, I find it lacking as a CD burner. It is also very loud (my 2510A is loud too). Any burner that is rated for 48x should be able to burn 48x Taiyo Yuden media at 48x. It is simply false advertising in my opinion, and should be illegal. Also, like the 2510a, I cannot burn two CDRs at the same time, which I can do with every other burner I've tried (Sony's, Lite-On and Cyberdrives. Hell, even my old Mitsui from way back). I guess I cannot really complain, since the drive was so inexpensive, but I am certainly disappointed.