A lot of people talk about these discs work these discs don't etc. etc. and I did the whole buying lots of different types of discs too but one thing few people mention is.....TRY A DIFFERENT BURNER! I had tried Memorx DVD-R and TDK DVD-RW discs with my girlfriends DVD Burner, and had no luck. Convinced it was the crappy DVD media I bought some Ritek Ridata DVD-R's which is what I've herd is the brand of choice for Wii owners but anyway, after I got a NEC burner the discs worked fine, the Ridata ones, the TDK, and the memorex.
I've herd Sony's are top notch quality DVD's.
http://www.meritline...nk-media-1.htmlThat kinda gives you an idea of quality comparison. (I admit sony isn't on the list, but i've herd good things)
anyway! Sorry to bable, but the point is, try a different burner. Oh and also, try some homebrew, i found homebrew worked when my girlfriend burned it, even if backups didn't. Well i'm off to class good luck.