The Open desktop mechanic comes home too:
When my wife lodged a service call, our provider told her to cycle power and press hard reset buttons on everything. When I came home, the Mac was inoperable, broadband was gone, the router which had been working flawlessly for several years, lost all of its DSL settings, WEP keys, NAT filters and passwords. The routers WiFi had been reset to its default open state and the ISP’s call center was gone for the evening.
I’ve had a few help desks try something like this on me. Seems like a good way to get the person off the phone and forced to call the ‘techie’ friend who set it up for them or some paid onsite support.