I don't know if this is a developing trend or not, but I bought a GX-7 (through Amazon) and it suddenly stopped working -- one day I just got a message that said something like "Please turn the camera off and on again." And that was it -- every time I turned the camera off and on again, all I got was that message. I'd seen a couple reports of problems on DP Review, and they were identical to mine. Anyway, I went on-line with Panasonic and they told me instantly that it was a fatal error and the camera would have to be sent to their Texas repair facility where it would either be repaired or replaced with a factory refurbished machine. The action was so clear and immediate (with what appeared to be canned responses) that it suggested to me that Panasonic is very familiar with this complaint. They gave me a website to go to, to start the process of repair, but I couldn't complete it because nothing I typed into a required "model" identifier field was accepted, and the site doesn't recognize "Panasonic DMC-GX7" as a Panasonic product. That was a dead end. I think I can return it to Amazon for a new one, but I'm not sure of that, either. I had taken less than a hundred shots when it died.
I actually bought two of these cameras, and one of them I got from Henrys in Canada because I wanted a black model. I'm just praying that that one doesn't go up in smoke as well, because I don't know if that camera will be returnable.
In any case, if you're thinking about a GX-7, keep this in mind. I like the camera a lot, and had just bought a new $1600 lens to go with it. Traveling with the 7-14, 12-35 and 35-100 (the last two constant f2.
is way better than traveling with a similar Nikon kit...except, of course, that the Nikon works.