Blackberry outage in three continents

Yersterday, there was a massive RIM's network outage in Europe, Middle East and Africa which lasted for 3 hours :

http://edition.cnn.com/2011/10/10/tech/mobile/blackberry-outage/index.html

Millions of users were affected. 

As usual, RIM will never disclose the root of the failure using the excuse that RIM's network is based on a proprietary design and it needs to keep its network design and architecture confidential.

Though Asia was not affected in the incident yesterday, we can not be sure we get the same luck next time.