First guess here is a blank media issue. Also likely, is an inappropriate burn (probably too fast) speed or a combination of the two. I realize you said that you're using the recommended media +R. It would be most helpful if you could post the actual Media ID or MID. For eg., for a specific Taiyo Yuden disc the MID might be "TYG02". There are a number of tools that will do this, such as, DVDInfopPro, nero CD-DVD Speed, etc. The burn speed would be great to know as well...at least for starters.