Why would my router randomly become unreachable under WPA2?
We just switched ISPs from AT&T DSL to Comcast. AT&T had its own (horrifically bad) router, but with Comcast we're using my 802.11n Airport Extreme. Unfortunately, the router randomly becomes unreachable. I'm still shown as "connected", but I can't ping the router anymore. This doesn't appear to happen when I've got WPA2 off, though I can't confirm for sure. Any idea why this might happen, or what I can do to prevent it? I would really prefer to be using WPA2 if at all possible.