This is my first install of Ultimate Edition in quite some time. My last computer was a tad underpowered which may have been some of the problem.
Currently running Ultimate Edition 2.8 X64 on a Gateway NV 73 with an AMD Athlon ll X2 M300 CPU, ATI Radeon 4200 graphics, 4 gigs of RAM, and a 500 gig Seagate Hybrid Hdd.
This laptop dualboots with Windows 7 X64 and everything runs fine. I haven't had any problems so far.
I installed right off of the DVD and have left it alone. I know I could start tweaking it until it broke, but I'm leaving it as is. It works and I like that. I'm not a guru and I tend to break things when I fix them.