[Britster]

Hmmm... weird. Some times if I'm not barely doing anything on it, mine will last for 2-3 days without being charged (that's with no playing games, no surfing the web, and maybe a few phone calls).

I don't charge mine all night though. I always heard that letting your phone stay plugged in for a long time, after it's at 100%, drains out the battery. Not sure how true it is. But I've always done this with my computers and phones whenever possible: I use it until it's almost dead, then I charge it until it's at 100%, and right when it gets to 100%, I unplug and repeat (let it get almost dead before re-plugging it back in).

But yeah you may have a bad battery. Do you x out of all the apps? When you kind of double click on the main button on the iPhone, a scrolly thing comes up on the bottom w/ all your apps that are open, and you should hit the red "-" button and delete them from there so they close.