BlackBerry service is fully restored for 70 million customers worldwide after three days of outages. But officials still don’t have a definitive cause for the failure of a core switch that led to the disruption. They didn’t say how reparations for customers will be handled. RIM has service level agreements with thousands of business customers using BlackBerry Enterprise Server that govern outages, but consumers with the BlackBerry Internet Service are not as well protected as those on the Internet Service. Both executives said they had experienced 99.97% uptime on its global network for the 18 months prior to Monday’s outage.”]