The list of WiFi connections in my list in Windows 7 is constantly changing as WiFi networks come and go. I cannot even connect to mine.
Meanwhile inSSIDer is showing my WiFi network with max signal pretty stable at ~57dBm as I sit just 3m (10ft) away from the router and there are no obstacles in between.
Could that still be a network adapter issue? Last time I saw it working with my old 802.11b/g router a couple of months ago, now I have a 802.11b/g/n one. WiFi adapter only supports 802.11a/b/g though.