I just spent 4 hours doing onsite customer training for a customer of ours who is transitioning from an ancient terminal-based software to our software. These customers had therefore bought all new laptops with all new Windows 8 to replace their old terminals. The decision to use laptops had been made because 1) the network infrastructure in place currently ran the terminals which were actually win95 computers plugged into a local network and using telnet to reach the server so wireless was necessary until the old equipment could be removed and 2) the computers running the old system needed to stay there until after the training was complete and they were ready to switch.
I estimate 30 minutes of that time was spent unfucking shit that went wrong when people who had never seen a GUI or used a touchpad in their life had their palms brush the touchpad and trigger random win8 gestures, opening the charms bar, opening bing, opening the start screen, and in at least one case, somehow closing the program window (or was it open somewhere but alt-tab no longer works in windows 8? Damned if I know!)
For the next round of training tomorrow I plan on disabling the gestures. Easy peasy, just a few SynTPEnh\ZoneConfig registry entries to change. And they say Windows 8 isn't ready for the desktop!