I like Windows Server 2008 64-bit. It's nice to see all 4 GB of RAM recognised and used. However, at the end of the day, I really don't see any significant performance boost from using it over Vista Home Premium 32-bit (Sp-1). I'm sure that "stressing" it might reveal some areas of superiority, but I can't be bothered, at the moment. I run Office 2007, which apparently doesn't play nicely with 64-bit Windows, and need to get back to work. Thus, the original 250GB HD with Vista, my applications, and e-mail already installed and set up is back in the notebook. The smaller drive with Server 2008 installed and activated is back in its external enclosure (useless there, BTW and OT, because getting a SATA drive to be recognised and mounted in Windows via USB 2 is more miss than hit).
When I have time in the future I'll play with it again. Just thought I'd update my previous posts in this thread.
Justice - any updates on your experience?