Opinions on Lenovo X220?

(Sorry in advance for this possible misuse of the planet, but I feel this might be geeky enough).

My old Fujitsu-Siemens Amilo Si1520 laptop, which has served me well all in all, has started to fall apart on me hardware-wise. Since I recently got hold of a bit of extra cash, I’m looking for a replacement. I’m considering the Lenovo X220. It’s basically the same form factor as my current one, which is nice since it’s what I’m looking for. And it seems it has gotten some good reviews. I’ve never owned a Thinkpad, or an IBM/Lenovo machine for that matter.

Anyone have an X220 who can give me the inside scoop on what annoys you most about the machine? I see in the spec sheet that it’s certfied for Redhat/Novell/Ubuntu, but has anyone had any problems getting things to work?

If I get this model, I’d probably be getting the Core i7 one, but without an SSD since I already have a 180 GB SSD to put in it.

Thanks for any answers/recommendations!