Kevin Gilmore is a network administrator at MicroDisplay, a small company in San Pablo, California, that uses several Wi-Fi access points to give employees the freedom to roam around the office with their laptops while remaining connected to the Internet. But these days, Gilmore keeps encountering a problem that many Windows XP users know all too well : the sudden and inexplicable loss of their wireless Internet connections. As Gilmore knows from the flow of support calls, there’s little point in trying to find a permanent solution to the problem.

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