I just got an e-mail from Canon Philippines yesterday and they said that they will be including the Powershot S1 IS in their list of cameras with a malfunctioning CCD. In other words, they'll be servicing it for free even if it's out of the warranty period. :)
I brought in my camera today and the only bad thing about it is that I'll be getting my camera back in around a month or two because of all the cameras they have from the service advisory.