As a UK user with the same fault and following the posts from across the pond I've contacted Which magazine, a consumer protection group who have a strong European ties as well testing products. Their reply to me says: "I'd like to thank you for shar...
Same problem as all the other contributors, printer is an MP610 with the UO52 error code. I followed the Canon recommended 'fix' which doesn't work plus I cleaned the head and changed the inks. When I put the 'faulty' printer head in my older Canon M...