I received my brand new G10 yesterday, took it our for some shots and, after down loading the pictures onto my PC discovered a big nasty dust spot in the sky. I then took a controlled picture at f/8 of the blue sky and yes, there it was again. I had the exact same problem with my G7 years ago. I had to send it to Canon to get it cleaned - I guess the G10 will take the same journey. Too bad Canon does not assemble these great cameras in a clean room - at least the sensor part should be handled in such a clean environment. Other than that, I love the camera and the wider lens is very much appreciated.
Have a great weekend everyone!