If you have an EM64T machine and have installed Visual Studio 2005 on it, please let me know. We currrently have a third party vendor helping us with some test cases and the Express SKUs are failing to uninstall on the EM64T machine. We can't seem to reproduce the problem. If you've installed successfully or unsuccessfully on an EM64T machine, please let me know. (Post a comment or send me mail).
I want to make sure there's no issues with that processor and this could be a machine specific issue.
By the way, we're so very close to shipping VS 2005 :)