hello there
i just bought a used thinkpad T42. i was thinking about installing ubuntu instead of xp in order to get better performance with this old laptop.
but now, there is a confirmed rumor that power management does not work properly with ubuntu (i dont know about other distros). aggressive power managment could be killing the hard disk because ubuntu does not overwrite bios defaults (unlike windows). read all about it here
https://bugs.launchpad.net/ubuntu/+bug/104535
so i will stick with winxp until this problem is resolved.