I have an X30, which I've used a little over the last few months. If I set it to autofocus, put it onto a tripod to make sure there's no camera shake, and then repeatedly press the shutter button half-way to have it focus, I can see on the distance scale that it will sometimes focus at infinity and sometimes at 30 ft. This is while pointing it at an object a few hundred feet away and using the smallest focus square, with spot focusing. So, nothing changes, but the autofocus will suddenly say things are a different distances! I have quite a few pictures, taken at a party, where everyone in all of the pictures is out of focus! Any hints? Should I just return it to Fuji under warrantee? I purchased it maybe 6 months ago.