Yep my Lumix TS3 fogged up the lense first time I used it in a pool. I opened doors and let it dry, it has always done this since brand new . Until the other day snorkeling it died.
I opened it up to find it has been leaking in the top corner since day one. Rust and corrosion. Cant be repaired. Bought a Opympus TG-630 for half the price and it seems good so far.
Panasonic might make good TV's but crap camera's
The seal in Lumix is so thin it's a joke, should have some glue and it would have been fine. Battery door is not the problem.
Crap products and I'll never get any panasonic product again.
Very unhappy customer