http://blogs.technet.com/haroldwong/archive/2005/11/15/414485.aspxAt IT Forum this week, Microsoft will (or have just announced) announce broad support for 64 bit across many of its product lines. As part of that announcement we will be announcing that Exchange 12 will be 64 bit only. This is a significant decisionen-USCommunityServer 2.1 SP1 (Build: 61025.2)