I have owned this FZ 2500 for several months, overall I'm pleased with its performance however the audio on long clips (5 minutes and more) goes out of sync, has anyone experienced this phenomenon. This my second FZ 2500, I returned the first one back to B&H for this very same issue. Panasonic reps were baffled with my problem, the only solution they had was to send it in. Any comments or suggestions would be much appreciated, thanks you.