I used to connect to a wireless network at the place where I live providing a password using WPA (don't really know what that is), it's been a few months since I can't connect anymore, the problem is this:
when Ubuntu starts it sees the network but keeps asking for the password and doesn't connect. What could be the cause? The landlord did not change the access point password and he's using windows on his laptop and works fine.
I did not change any network configuration file on my system ... Thank you so much. Luca.