Originally Posted by rdhw

You need to set the SSID to a unique string, not leave it at the default "Linksys" or whatever. If you leave it at the default, your laptops etc cannot tell your base station apart from any other base station called "Linksys" in your neighbourhood, and will randomly reconnect to the wrong base station.

Also, visit the Windows Update web site, run a "Custom Install" search, and download any updated drivers for your laptop wireless cards. This can make a big difference.