i probably forgot to mention, that all that time i was just simulating and never waited till the end of the simulation. today i forgot to set the slower burning speed and left the maximum (40x for a CD). the slowdown occured, but i said to myself i should bare it. but around 60 percent of the CD, the burn process failed. i don't remember, what it said, i don't know where exactly should i find the logs, i was searching for them, but found nothing. it's very odd when the burner spins the media to the extreme, like it was writing at maximum speed, but disk doesn't do anything. when i am burning at 24x, the disk led flashes rapidly. in the slowdown case, it flashes once at a time...