It is weird....Since I updated the firmware the % of completion moves (very sow, takes 6 hours to complete) and it never did that before with these discs however the device buffer never moves. It stays at 0 the whole time. The "buffer" starts at 100 and stays there for a few minutes (5-10) then drope down to about 53 %. It takes for ever to try and go on the internet or do anything on the computer when I am burning. The burning aso gives me the same error as before after its done (6 hours later). Before I updated the firmware it would just give me the error right away and show 0% for completion the whole time and the rest of my computer would run normal. I also find that when I try and burn now that my Virus scan comes on and starts scanning my computer and I cant close it until I stop the burn. I cant find the computer usage in controll panel, part of the problem is that the computer runs so slow it takes to long to do anything. I hope this helps to give you an idea of the problem............