not bad, but not great
Just built one of these for one of our account managers. Nice little machine, but it did feel slow. Maybe I was expecting it to perform like a normal laptop given it had win7 on it.
I removed most of the thinkpad software, but did keep the connections app as that seemed quite useful. Having said that it refused to pick up a DHCP address on my n wireless network and was only happy with a fixed IP address. Possibly a windows issue, but I do already have 2 win7 laptops on this network which seem OK with DHCP.
Keyboard was nice to use, but I am still incredibly irritated by not having the ctrl button in the bottom left hand corner. Battery life seemed good, but I did not drain it. The default powersave mode also seemed very agressive.