hola46 looks like media your using is ok thry burning slower. have you checked you firmware see if it up to date?http://forum.rpc1.org/dl_firmware.php?download_id=96 CDRALW2K.SYS is part of Roxio. try uninstalling Roxio (doesn't always play well with Nero), then you might need to fully remove using Roxio Zapper edit just seen your multi posting.. try to stick to one