I'm sorry to hear that you're having this issue.
Does adjusting the AV SYNC menu help at all? Have you tried going up further to 100ms or 120ms, or does it have the reverse effect?
I recently purchased a HT-BD8200 soundbar to connect to my (first generation) Series 7 40inch LED TV. I have the soundbar connected to my TV via the HDMI cable included with the soundbar.
The issue is when I watch a DVD (either upscaled to 1080p or using BDwise to set the resolution) there is a noticable lipsync issue and the audio does not line up with the picture. I have tried changing different settings on the soundbar's audio delay and set it to 0ms 75ms and 50ms and the synch issue is still there at all these settings.
Please Help! its driving me nuts and wrecks the whole viewing experience.
p.s oh and I have updated the soundbar to the latest firmware.