I've written quite a few DVD's. At 16x, I've gotten occasional errors (using the same brand of media all the while) - about 1 in 25 fails to write. I recently started writing at 4x, I'm finding I've gotten no errors and no unreadable disks. I'm starting to think I should write all my important dvd's at this low speed.
I've also written dvd's only to have them pass the initial "verification", then about a month later, try to use them only to find that parts of them have become unreadable.
(None of the dvd's are scratched or physically damaged)
Does writing at a lower speed increase reliability of dvd's ?