PostPoints tip: Don't feel bad--anybody can have WiFi problems

Are you fed up with being knocked off your home wireless network for no good reason? Are you puzzled why your connection speeds some to drop to zero just when you're trying to upload an important file? Well, at least you've got some exalted company. Last month, Google saw two keynote presentations at its developers conference in San Francisco repeatedly interrupted by wireless-networking glitches. And just yesterday, Apple had similar problems disrupt its introduction of the new iPhone 4--chief executive Steve Jobs had to ask audience members to shut off their own WiFi networks. So if your WiFi starts acting weak, know that it can happen to the best of us. (Then try rebooting the router, changing your network encryption from WEP to the stronger WPA, and looking for a firmware upgrade from the router's vendor; the manual should explain how to do those things. And if you happen to be in San Francisco's Moscone West convention center, go somewhere else--Moscone's WiFi is terrible, as Apple and Google can tell you.)