Been away for a while.
Just another addition to the old "not burning properly" problem.
I too had these problems, I tried every program I could find and there were errors before and during the burns.. But then ONE program threw up an error saying something like... "Burning dual layer may be compromised..." because I had ANYDVD and DVD Region+CSS Free, running.
I stopped both of these programs and the disc then burned perfectly... three times.
If anyone having burning problems has these progs then try disabling them before you burn...
Cheers
Joe