I currently use Ubuntu Linux, on a standalone laptop - it has no Internet connection. I occasionally carry flash memory drives between this machine and the Macs that I use for network surfing and graphics; but I trust my family jewels only to Linux. ↗
I love my little Mac G4 computer and we just had Internet installed on the bus... we all have little Macs actually, there's four of us on the bus, and we all just sit there and surf the Internet! ↗