Hello Jack, welcome on the Win2008Workstation.com forums! 🙂
1. Superfetch loads programs to memory in advance so when you start them they don’t have to be loaded from the (relative slow) harddisk when starting them. I don’t know when Superfetch starts loading these programs, but from your case we can conclude these are loaded while or right after booting the system. Here is a benchmark of the SuperFetch and ReadyBoost functions by Tom’s Hardware. That might give you some more information about the results of enabling Superfetch.
2. I also found that just after the installation the boot time was very short, but now it is getting slower. This is a Windows common problem, but you can try to get it faster again by finetuning services, autoruns and other slowing-down applications using Sysinternals Autoruns.
