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I am in the process of planing an upgrade from Blackberry Enterprise Server (BES) 3.6.6 to version 4.1. &nbsp;I was wondering if anybody has done it in the past and has any suggestions or tips regarding the upgrade. I have one Blackberry server(Windows 2000 server) with close to 40 users. Any knowledge transfer or suggestion is appreciated. 
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I am in the process of planing an upgrade from Blackberry Enterprise Server (BES) 3.6.6 to version 4.1.  I was wondering if anybody has done it in the past and has any suggestions or tips regarding the upgrade. I have one Blackberry server(Windows 2000 server) with close to 40 users. Any knowledge transfer or suggestion is appreciated. 

Upgrade from Blackberry Enterprise Server (BES) 3.6.6 to version 4.1

Programming theory deals with the design, implementation, analysis, characterization, and classification of programming languages and their individual features, along with introductory programming concepts like program structure, variable declaration and conditional and looping constructs. Sub-disciplines include the formal semantics of programming languages, type theory, program analysis and transformation, comparative programming language analysis, metaprogramming, domain-specific languages, compiler construction and run-time systems.