Re: having the same problem....
Good Afternoon,
I also have been having the same problems. I recently changed from XP to Vista Ultimate, one of the first things I tried was burning to a DVD, I managed to do this successfully. I tried again recently and found that I was not able to burn to DVD or CD.
Investigating several sites I found one report of this as a side effect of JMB36X controller ( an installation I made when trying to bring all drivers up to date). I removed LMB36X using program uninstall, restarted my computer, checked auto play was set correctly put in a blamk CD and everything worked as it should.
Hope this may be of help.