As promised, Sony returned my 530 DVD player 10 days after they picked it up. I have watched only a few movies at this point, but no sign of the 'lip sinc' problem....yet. Wether or not they actually did anything is truly yet to be seen. The return invoice listed 'audio sound repaired, unit cleaned' as their "repair", so who knows for sure just what they did. No specifics on the repair were listed and I can't seem to get a real person on their technical support line. I will definately be looking closely for an further problems.
Sean