I have a NEC 3550A in the family computer. It's hardly been used.
It won't read Verbatim DVD+R DL (MKM-001-00) burned with my BenQ DW1655.
The drive reads my burned single layer discs, as well as commercial DL (movies) just fine. I hooked up an old Pioneer DVD reader and it reads the discs, so it's not a Windows problem.
Both drives have the latest stock firmware.