Finally received this statement from RIM, but sadly, it doesn't offer up any further explanations to yesterday's BlackBerry service outage.
"RIM is continuing to investigate the exact cause and we will provide you with additional information as soon as we are able to verify the events that prompted the interruption. We appreciate your continued interest in BlackBerry and will keep you informed of any updates."
That the company is still researching the cause the day-after is a bit worrisome, given how many users rely on their service.