Ye gods, it's Ubuntu.
I have used various flavours of *nix (remember DEC Alphas? Sparc10s?), Macs (G3,G4,G5) and Windows since I first became a scientist. But I managed to resist it for years.
Today, I succumbed.
I'm finally a Linux user.
ETA: I have also named my new netbook "Mein Handy".