I have a MacBook Pro 15", about a year old. Today, the charger started working only intermittently. I've seen a few other people talking about similar problems, and most people say it's a problem with the charger.
However, I'm on a working holiday and the only Apple suppliers in this city are very expensive. If I have to, I'll buy a new power adapter, but I'm hoping somebody might know some fixes I can use to get me through the next couple of weeks until I'm back in the UK.