Reminds me of all the pissed off people when Unity arrived! However this should be on a much larger scale! Hehe!

And it's used *VERY* widely in the server world - Exchange, AD, SQL Server: not as widespread as Linux and the various commercial Unix variants, but it is very prevalent. Also, fwiw, as of 2k8 - it doesn't even suck [much]. You sound unsure! SQL Server works just fine for smaller applications, NOT Enterprise level! AD works well for ILM. Exchange offers a TON of ammenties, however is and always has been a high level risk for Email Security. Okay, fine bring in a third party email proxy, you still have a cheesy OS that needs to rebooted often.