They're having a sale ! ;-)... I'm sure this is costing them plenty, and they'll probably quietly find a solution, but not admit publicly that there was ever a problem in the interest of reducing liability.
Well... I just called Canon Canada Tech Support to let them know of the U052 error message I'd encountered in the middle of a print job, and that it was a widley known issue, and he claimed that it was the 'First I've heard of it'. Then he put me on...