Just brilliant… MacOS X is actually the best implementation of Linux, followed by Ubuntu. The gap is closing, although Ubuntu will never get where MacOS X is because of the better hardware integration of the latter (although you pay the integration and the ease of use with stability, as the MacBook is definitely the most fragile of my three machines – Ubuntu, Windows XP and MacOS X – being the first one that slows down and then freezes when I open more than 100 tabs with Firefox).
When Microsoft will stop maintaining and supporting Windows XP, I will definitely switch to Ubuntu and MacOS X. With a little bit of research, I have been able to configure the two PCs in the same way, using mostly open source software. Switching between the two machines is just a question of syncing a few directories.