blackberry-pearl8100-b529c.jpgWasn’t it just last year that RIM (Research In Motion), BlackBerry’s maker, suffered a technical failure that brought the system down for more than ten hours? Well, it happened again yesterday to about 4 million U.S. and Canadian customers, idling thumbs across North America for fewer hours, but with no less pain. In the end, it was a new software installation (an upgrade that was designed to accelerate e-mail processing) that was the culprit in the RIM systems.