as header, i use 2 pioneer 108's, and when duel burning, sometimes the second burner hangs when writing leadout, if i turn off the pc whilst its hanging, i can open the dvd tray, if i leave, it hangs for about an hour, then nero shows burn failure, but the dvd plays on my pc, and standalone, so how do i tell if disc is closed, and, anyone else come across this when duel burning..?

tia.