Just got off the phone with Canon tech support. My i960 had clogged print head after sitting for a while unused. I used up almost all the ink trying to clean the print head... no luck.
Tech support gave me an option to take it in for repair (I'm in the middle of a project and need it), swap it for a refurbished one - WITHOUT a New Print Head!, or BUY a new Canon at a discounted price. Why they wouldn't send a new print head is beyond me. I love my Canon 10D and will stick with them for digital camera products... but I'm off to buy an Epson Printer.