I've had my S100 for a couple years now, used it sporadically and have always been really happy with in... until a few months ago. When I charged my battery (the original one that came w/ the camera) the camera would just die, or maybe take 2-3 pictures then die.
I thought maybe the battery had finally had it, and bought 2 new ones (Maxells). Unfortunately, the camera responded the same way to these. I borrowed a friend's battery charger to see if maybe it was my charger that was defective. Nope, his charger produced the same results. Finally, I sent it to Canon, paid something like $150 USD, and after about 6 weeks got back the camera in the same condition I had sent it -- all my batteries die in 3 shots.
After receiving the "repair" back from Canon, my next test was to try my 3 batteries in my friends S200 -- could the malfunctioning camera have zapped my batteries dead? Nope, they worked in his camera. So I sent my camera back to Canon. They "fixed" it faster the second time, but I have received it back now and it's just as bad as ever.
So what am I to do? I've spent $100 USD on new batteries and $150 USD on repairs to revive this camera, with no luck... I could have bought a brand new camera with that money. Has anybody heard of such problems before, or have any suggestions? I hate to give up on Canon, because I otherwise have liked this camera so much. But I'm quite frustrated and really want a working camera.