IBM statement re: Domino/Notes support on Windows 2003:
* Support for Windows 2003 server/Windows 2003 Enterprise Edition will begin with Domino versions 6.0.3 and 6.5, including Domino 7 server.
*** The Notes Release 6 and 7 client will not be supported on Windows 2003.***
*** There are currently no plans for support on the 64-bit version of Windows 2003. ***
* Lotus will support any Service Packs that are released for Windows 2003.
* From 6.5 Release Notes Citrix support statement: The Notes client is supported on Citrix Metaframe XPe FR3 on Windows 2000 and Windows 2003 server using NT and MAC ICA1 clients.
http://www-1.ibm.com/support/docview.wss?fdoc=wplcdomi&rs=463&uid=swg21110541
Of course my post was regarding Notes on Linux.