Originally Posted by boteman

I have left my Nexus on battery all day to see how long it lasts. It seems that when it goes to sleep it drops the WiFi connection because when I wake it up the WiFi icon pops in the status bar after a second, white, then turns green if I do something that exchanges data.

I have an HTC Hero to experiment with that I think does that also, so I guess that's just an artifact of the phone going to sleep and conserving battery power if it isn't actively using the data connection.