I've got a problem the power (/stand-by) - button on my iPhone 3gs won't work. Whan I click it I can feel the "click" but nothing happens...
This is bad because I can't turn it of or put it in stand-by !!
The easiest would be to try to restore it. If that doesn't work, bring it in to your local Apple Store or another shop in your town who repairs iDevices