Hi there, I am using a Pioneer DVR 107D, have beenm using it for ages and only burning Verbnatims 4x dvd-r's, no problems, but have just bought a load of Verbatim 8x dvd-r's and have been getting a error saying it will not burn, having problems with approx 2 our of 15 disks. They are Grade A stock. Can you let me know if you trhink it's the firmware? If so how do I check the firmware version I have on mine at present? Many thanks in advance, Martin