I also have been getting this error about 1 out of every 5 discs I'm using. There Maxell DVD+R 4.7GB, I've never ran into problems before, I recently bought 200 of them (10 I've scrapped, I don't care that much though, he it just confuses me). I upgraded to, a WD 500GB External, and a LG LightScribe burner (internal). Now, if I try to reburn the same iso, it gives the same error, I never really thought about it till I read this thread, but If I burn that exact same iso with VSO Blindwrite or something else it does fine. The only time I've had a problem with imgburn is after I got a new burner and new HD, and the images are coming from the external drive. Is this a media issue, I can't see it being anything else, unless I need to tweak some settings in Imgburn, and yes I know 1st rule no LoG =