I did at 6x and 8x, results are the same. And I know my burns are ok, because I use other program (cdcheck) to verify burns on dvd-rom drive, while burning another disc on dvd-writer.
Absolutely no problem when burning normal DVD+R media. It happens only when I burn DL discs.
I will try to analyze last 10-20 burns in the log, as I think there were some discs which finalized in normal time - can it depend on the type of the burn (ie building disc with several files vs burning ISO image?)
RGDS,