great for bright days, poor indoors

Okay, positives on camera. Its great with crisp sharp photos. works excellent on bright days. Negatives, the cap is a pain. everytime i grab the camera out of the camera bag - the cap always has fallen off.
I was in europe on a 12 day tour of 6 countries. Pictures outside on a gloomy day - like in London, were hazy no matter how many times i took the shot. When i was inside St.Peter's Basillica, all my images were dark and hazy. I was very disappointed. I used automatic flashmode, then i tried even night flash, and also changed the light exposure -increasing it. Still my pictures were disappointing. I think i read somewhere that it works in ISO130-200, which makes sense for the great bright outdoors picts, but when its dark outside or inside a lowlit building - poor quality.