I used a D2H for 3 months, starting in January 2004. I returned the camera to the owner after this period. This camera has been used in very different and harsh conditions (from -20°c to 45°c, rain, snow, sun, sea spray etc...). It has never failed and continues to work perfectly. The owner doesn't "baby" the camera, quite the contrary in fact.
I see no reason to be worried .
Francois