Are there any good current options for something that comes preinstalled with a reasonably normal version of Ubuntu or Debian and works well? It seems a lot of the preinstalled-Linux netbooks come with some sort of manufacturer-customized version of Linux, which I'm worried will cause problems down the line for upgrades. I'm confident that I can upgrade a standard Ubuntu or Debian install for years, but if it has some manufacturer-hacked install, I'm much less confident how long the support and updates will last (worse if it's a manufacturer-customized kernel, in which case I'm not even confident that it'll boot after an upgrade).