Protected wifi connection problem

Hallo,

When i try to connect to protected wifi with WPA, it doesnt allows me to enter a code. It just say, that connection timeout.

Only way I can connect to wifi, is with network diagnostic, but i must do it every time i want to join a wifi even I check that i want to remember the password. :/

I have Mountain Lion 10.8.2 and macbook air 2012 (latest one)

I restarted router but it didnt help.

Sorry for my english

Thx for your help.

Message was edited by: wuttasi