I've been meaning to post about this for a little while. I was getting tired of a nasty battery problem on my old T43p and we've started getting in the new 60 series of laptops at work. I decided to replace the old machine with the X60s and I'm super glad I did.
It is a remarkable laptop: 100gb sata drive, 7 hours of battery life (with the extendo battery) and 1.83ghz core duo proccy's with up to 4 gigabytes of ram. It's insanely fast and at twice the battery life and half the weight. It has a built in EDGE card and more than enough power to run Ubuntu in a vm. I've not tried installing Linux native yet on it, but the performance under linux is plenty snappy enough. I've even started using this little side bag from linux.conf.au 2007 that's perfecto for it.
I understand they have a 1400x1050 version, but I'm actually happier than I thought I would be with 1024x768. Full screen modes (F11 in firefox) are your friend. Also, it has a video card fast enough that I can play Homeworld 2 on it. It is a fairly remarkable thing.