David Lisowski , Jun 17, 2012; 05:45 p.m.
This is why the first thing I did when I got the 5D MK III was add it to my insurance policy. Accidental loss, breakage, etc. It's a personal articles policy with all camera equipment listed with serial numbers, etc.
Regarding rain I have shot soccer games with my 20D and 5D MK I in the pouring rain using a plastic rain shroud. I am sure it was 100% humidity. I never had issues but also having that super absorbent shamwow fabric or whatever they call it now, is a good idea to quickly dry the camera off.