Strange problem burning Ritek DVDs with DVDDecrypter

Hi all, first thing i'm not really sure this is a DVDDecrypter fault because had same problem using nero. Strictly speaking yesterday i've tryed to burn 2 Ritek DVD without success, 1st time from a .pdi image using DVDDecrypter, after that & after converted .pdi->.iso i've used Nero (version 5) & wasted the 2nd DVD. I've also done many test before try to burn the second DVD and DVDDecrypter always hangs after reach 6% or so, it simply freezes everything (leds on HD & on my SONY DRU-500ax drive simply turn off) even when i try to abort the test process nothing happen i must reset & restart. More strange is that few minutes before waste the 1st Ritek i've succesfully burned a Fujii DVD-RW with the same .pdi image (with DVDDecrypter of course). Even stranger is that simulating burn with Nero was succesfull, but when i've tryed to burn for real even Nero freezes. If possible I'd like some help to understand the problem before to format & reinstall my OS (WindowsXP SP1). Should i try to enable Debug mode in DVDDecrypter (to produce log)wasting the 3rd DVD or may i just use debugging with test mode? Thx 4 support.

Here i'll report the DVDDecrypter log info i have just few minutes ago: Code:

My mistake, sounds like a hardware error in your case. If at all possible, I would exchange the drive for another. The first 500a I had was bad, my new one works fine though. When I last called a few months ago, RMA for a Sony drive was along the lines of 10 weeks total processing time.

You should also always ensure you have the latest firmware on the drive. I have 2.0f on my drive whilst you appear to only have 2.0c The latter may have fixed issues burning these discs...who knows?!

This reminded me, any chance that the revised version of DVD Decrypter is coming out soon? No rush or anything, the current version is very good.

I only have the Ritek G03 2x discs, but I never have a problem with them. I too have a Sony 500A with 2.0f firmware.

First time problem 

I've burned about 450 Ritek G03s with the Sony DRU 500A, and I recently got a batch of 100 where about 50% fail near the end. If I burn less than 4GB I never have a problem, but anything over that and the problem arises. It isn't decrypter or the drive; if I use the same file burned with Decrypter, I encounter the problem only with discs from the one batch and not with a second batch. Now that I've figured it out, I can use the remaining discs for the instances (e.g. an hour of home movies or backups of MPEG files) where I am only burning less than 4 GB, but what an irritation! I bought the discs from Rimacom, but I want to emphasize that one of the two sets of 100 I bought from them seem fine and there is nothing obviously amiss with either of the packs. The other 400 I've used came from Supermediastore.