If you have not been paying attention to the news recently you might have missed the mass protests and rioting going on in Egypt. I will not cover that in detail but we just heard from Hisham in Egypt confirming that BlackBerry Service has been blocked in the past few minutes.
He has confirmed the block across 3 networks including Mobinil, Vodafone, and Etisalat. Egypt has already blocked Twitter and Facebook due to the strikes and protests but this is the first time I have heard of them blocking BlackBerry Service.
Let us know if you have any updates from Egypt!