*** FILE *** Avid Blackberry user Joseph To uses the thumb keyboard on his RIM Blackberry in San Francisco in this March 28, 2002 file photo. BlackBerry service was being restored Wednesday morning, April 18, 2007 after an overnight outage that left millions of users without mobile access to their e-mail on the popular device. Research in Motion Ltd., the Canadian company that provides the devices and e-mail service, said the service interruption began Tuesday night, affecting users in North America. (AP Photo/Justin Sullivan, file)