I have an old laptop that I've replaced as my primary home computer due to some virus and heatsink issues. Out of sheer boredom, interest, and masochism, I dragged it out of the closet today and switched the OS over to Ubuntu 12.10. There was a time when I was somewhat knowledgeable about computers, but that time has long since passed. I had neither the time, the intellect, or the money to keep up. But, some of my more tech-savy students extol the virtues of the various linuxes. What have I gotten myself into?