I've spent the last two hour frikkin around with my wireless connection, because everything slowed to a crawl.

All of sudden I get a little exclamation mark in the wireless icon, showing limited or no internet access.

So I go and look at all available wireless networks, and it shows me connected to an unidentified network, and it's alternating between no internet access and limited internet access; my router's SSID is listed directly beneath it and also showing as connected?

WTF?