By JUSTIN PRITCHARD 2010-10-07T01:18:35Z LOS ANGELES (AP) -- Federal regulators leaned on McDonald's to quickly recall 12 million "Shrek"-themed drinking glasses this spring because they concluded that a typical 6-year-old could be exposed to hazardous levels of the metal cadmium by touching one of the glasses just eight times in a day, according to documents obtained under the federal Freedom of Information Act....