> it's only taken four years for the fan in my T510* to pack up
My work-provided T510 is still going strong, even though the previous user managed to break the plastic cover on the heatsink and the front of the DVD drive.
I've also just got a 2nd hand T410, which apart from a few scratches around the USB ports and a bit of shininess on some of the keys looks new.
I'm not sure they are quite as bomb-proof as the IBM ThinkPads were, but they are better made than a lot out there. I set a Toshiba of some sort up for someone and the keyboard actually bent in the middle as you were typing.