The 1.30 upgrade software rocks. You can upgrade inside windows and don't even need a reboot.
version 1.30 will not stop you from buring at 2x on any DVD-R that you could with 1.21. i would guess that Almighty's "princo 2x " have been branded as TDK discs ?.
I've tried some of these discs too. In my option, I would stay as far away as possible from these princo/TDK discs. Your burner thinks it is burning to a TDK disc, and is using what it thinks is the best laser settings to do this, but in fact it is buring to a different brand, manufactured at different factory using differnt fabrication methods. To me this is the worst possible scenerio imaginable! :Z