I've got a different problem, but it might be related to this. I have some Verbatim MCC003 (pearl top). It used to burn nicely at 12X using A102. I upgraded to A103 but never tried those discs on it. I did try them again with firmware A104 and they would only burn at a max of 6X. It's the same discs from the same spindle.
I bought some other verbatim media (pinky stripe MCC003) and it too won't burn at speeds higher than 6X. I get coasters at 8X. I'm beginning to wonder if this is also caused by something they did to A104. yudent02 and ricohjpnr02 still burn fine at 12X so there is nothing wrong with the drive. It seems to only affect MCC003 media.
I saved the firmware files from A101->A104 so maybe I should switch firmware back to A103 to see if it makes a difference.