I just turned on Madden 11 and went to find unranked games. It couldn't find any. I try to create a session, and no one wants to play/join. I go to the lobby and ask if anyone wants to play unranked and people only want to sit in the lobby/play ranked games.
I just know that in Madden 09 and prior, I could "search for an unranked game" and find people to play. Unranked is a ghost town now. the only unranked games I have player of madden 10 or 11 are against friends.
On the rare occasion someone does join my lobby, or I find a lobby with someone in it, they leave right away.