The first thread, well it's difficult to tell, as there's not much in the way of specs. If they are running around the minimum it does not surprise me. Also how much change is happening on the shares, how many users at once etc will all play a part.
If you noticed, the probems seemed to occur when streaming HD material. This is exactly what I intend to do, thus my serious concern surrounding Windows Home Server.
Right now, I run my main PC as a server, client, gaming PC, main PC, HTPC - everything. The PC in bedroom streams video, data and anything you care to mention. The problem is that the main PC has very high power usage.
The impression I get is that regardless of the speed of the CPU you use, WHS (or rather demigrator), absolutely cripples the server. This worries me. Furthermoe, it can't be healthy for a CPU to be running flat out, at close to 100% for days on end (which is what some people stated in those threads I posted).
I'm thinking that maybe I could run Windows XP or Vista and pair it with the Intel Atom with 1 or 2 GB of RAM. This server would run 24/7 (no lights out or similar program), but due to the low power requirements, it wouldnt be too bad. This removes the "demigrator problem".
Remember, as this is a home server, serving only 1 other PC, I don't require complex load balancing that WHS could bring to the table.