Are you running those on the server itself? Or on a PC over the network? If network, you may want to check some network parameters. But, as in most of the cases, my guess is you are running on the server itself. If this is true, are you calling them by IP address or a FQDN or a dns URL? All I am trying to say is there might be network glitch or something like that.
Did anyone find a solution to this? I'm seeing this issue as well, although I'm on Win Server 2003. EMC is taking at least 60 seconds to change screens, populate data, etc. This even happens directly on the server.