One of the announcements that come from PDC was that Windows Server 2008 R2 would be 64-bit only. I guess now we understand why Microsoft is finally saying when App-V (formerly Softgrid) will support 64-bit clients. (Unfortunately what they're saying is that it will be the first half of 2010, which is when 2008 R2 is expected.) This could mean that the "Parra" build of Citrix XenApp is 64-bit only. (Although Citrix might add as much as they can to XenApp 5 for 2008 R1 32-bit servers.) I wonder if this means that Parra will be 64-bit throughout, instead of the current hybrid 32/64-bit codebase?…. informs Brian