It could be due to updated DVD copy protection, encoded on the DVD's. The SSCRST encryption (anti-hacking) keys are updated fairly often. This is done to try and keep ahead of ripping software, to try and prevent the ability to create pirated DVD copies. Unfortunately, new encryption keys can cause playback issues in many older DVD players. So, unless you can update the player's firmware, the Falling Skies discs will probably never play correctly on the s7000. Sorry.