Home WIFI requires reentering my network name and password istead of auto entry

I found a couple posts searching for "iphone not saving wireless authentication."

One says you should try putting a dollar sign in front of your password, though that seems odd to me.

http://www.everythin...ered-21796.html

There's a couple articles on the apple forums about similar, but the only one that seems like it might be related is this one;

http://discussions.a...15477&#11115477

the final post says to have you iPhone forget the network, then enter it as an "other" network from the Settings, manually filling in the SSID (the network name) and choosing the security you've set up on your wireless router.