I’ve owned an HP dvd740i for several months now. Was burning great DVD+r close to max speeds with Roxio 8, but in the last couple of weeks its slowed down to about 1.5X. Have tried changing media, and using Nero but no improvement in burn speeds. In fact it often gets about 90% through and then tells me there is a write error. Only 2 software installed in that time was a screen saver (now disabled) and DVD X Copy PLATINUM (functioned well). Should I try re-installing the drivers, remove DVD X Copy PLATINUM or do something else?