since most of you have been moaning, i went hunting
"Your problem description indicates a firmware fault, bring/send product to update firmware at the nearest Authorized Service Facility.
Contact addresses as well as telephone numbers can be found on
https://self-service.canon-europe.co....cgi?r=ce&l=en via the Repair and Service link near the bottom of the page, under the heading Other Useful Links
Please be informed that after end of July 2008, the new firmware will be available for download on the Canon-Europe support website. You will will need a Mini SD card to perform the update (Mini SD card is not included in the product)."
hope that helps