I’ve a number of friends who use Canon digital still/video cameras. See if your camera model is in the following list:

Digital Cameras

PowerShot A60, PowerShot A70, PowerShot A75, PowerShot A300, PowerShot A310, Digital IXUS V3, Digital IXUS II, Digital IXUS IIs

Digital Video Cameras

MV600i, MV630i, MV650i, MV700i, MV730i, MV750i, MV5i, MV5i MC, MV6i MC
ZR60, ZR65 MC, ZR70 MC, ZR80, ZR85, ZR90, Elura 40 MC, Elura 50

Read on, if you’re unfortunate enough to find your camera model there. (I have nothing to say to you if you don’t know which model you’re using.)

A problem has been discovered in some of the CCDs used in Canon digital camera and digital video camera products that causes images to appear distorted or not to appear at all. We apologize for the considerable inconvenience this represents for our customers. Along with our respectful apology, we would like to advise our customers of the details of this issue and our policy for handling it, which are as follows.

Canon has more information.