CHICAGO (Reuters) - BlackBerry addicts have a crack at freedom when they check into one Chicago hotel: the manager will put the communications devices and others like them under lock and key for guests who want a break. Rick Ueno, general manager of the Sheraton Chicago Hotel, said the program which began on Wednesday grew out of his own personal BlackBerry addiction. His one-step recovery was switching to a regular cell phone. "I was really addicted to my BlackBerry. I had an obsession with e-mail," he told Reuters. "Morning and night. There came a time when I didn't think it was healthy ... I quit cold turkey." He believes guests might want to try the same thing for a day