My 451S won’t read pressed DVD’s at a speed greater than 8x. It used to go up to 12x on pressed discs, but now it’s locked at 8x and I can’t figure out WTF happened. Nero Infotool shows 8x, 6x, and 1x as my only read speed options on pressed DVD’s. I’m using the latest firmware (GSB7) and DMA is on and I haven’t done anything lately to cause this problem. I noticed this when ripping in DVD Shrink that my times went down drastically. I’m getting sick of this drive.