My G1 developed a symptom that after power down for about 10 minutes or more, then turn back on, the first picture is always over exposed, sometimes by as much as 3 stops. And, once in a while, I would get a message that says "Mode Dial not in correct position." although I know for a fact that it is.
I sent Panasonic a service request, which I got an auto reply saying that I would receive a reply in a few days. After 7 days, I received nothing. Sent them a complain mail and this time, I got a reply back in 3 days. They told me they could not find the request I sent.
Anyways, instead of e-mail, I decided phone call would be much more direct and faster. True enough. Phone was quickly answered. Support staff was very pleasant and helpful. In the end, they sent me a Canada Post XpressPost label I could print and send in the camera, on their dime. I have shot 15,7xx pictures with the G1 since April 3, 2009.
Panasonic promised the turn around time for repair is 48 hours after receipt. That's extremely fast. The last time Canon fixed my 1D Mark II, it took them 6 weeks (and two tries).
I have my fingers crossed.
One of the last few pictures taken with the G1 yesterday. G1 & Kodak Anastigmat 50mm f1.6 @ f1.6. Larger Picture.