Well, somebody has managed to install and triple boot three very different operating systems on their 5.6-inch convertible Fujitsu LifeBook U810 (which is being replaced later this year by the Fujitsu LifeBook U2010).
Yes, three separate operating systems:
– Microsoft Windows Vista
– Linux (Ubuntu)
– Mac OS X
They mention getting the touchscreen working wit Linux (as well as Mac OS X) as well as issues such as wireless drivers.
They’ve also posted a video of the U810 in action.