I only run a 500 gig internal hdd on my PS3. The 500 gig internal is 7200 RPM's. Yes, my PS3 has the server installed and my PC is the client. I do have my CAT 6 plugged into the back of my PS3 but I THINK that I tried one of the PSN spoofs and enabled wireless to check it out. I think I forgot to change it back. But yeah, I'll check it out tonight and report back. I believe I was averaging 20 MB/S with my setup when the 3.55 games were hot.
Thanks for the suggestions and comments. I'll report back once I get it going a little faster.