I have researched this completely. I recently installed CS3. I burn a simple DVD-R of any kind. It will not play back on any of the three Panasonic DMR-ES20 I own. It WILL play back on a Panasonic DMR-EZ47V, but with a long and noisy start up. The same for any Sony or Emerson DVD Players, Long and Noisy start up.
I reinstalled Encore 2.0. Burn a DVD-R. No problem in any player. Fast and perfect.
I burn the same project in CS3 using a DVD+R. That disc also works perfectly in any player.
In Summary: Burn DVD-R in CS3= BAD
Burn DVD+R in CS3= GOOD
Burn DVD-R in 2.0= GOOD
I have the lastest firmware available for my DVD burner (HP 740i). Can changing the burner fix the imcompatibility problem? Certainly, not everyone is having problems playing CS3/DVD-R media. Anyone experience similar?