I have a strange problem. I used MediaCodeSpeedEdit to edit ProdiscS03 to ProdiscS05. It shows all the available speeds in DVDInfo, but when I tried to burn a disc using Nero 6.6.06 it would only burn @ 4X (the original firmware allowed speed) even though Nero allowed me to select 8X. Any ideas as to why?

And yes I was using the "T" firmware.