You are full of s..t, this has not been solved and the idiots at the canon phone assistance don't have a f.....g clue. So don't post this crap as solved!!!
Same thing with my MX490, started this morning about 9 am PST. Tried everything, keeps doing the same thing. Canon better get their s..t together. There's no way this is happening to all of us at the same time unless they screwed up!!! Fix this Canon...