"Locked" icon next to network connection

[InorganicMatter]

We have an 802.11g network, and my mom's laptop has given me nothing but trouble. I got an internal wireless card that runs on a miniPCI slot, and for the most part it works. However, when I place her laptop on her desk in the kitchen, strange things happen. It says she is connected with a "very good" signal strength, but it doesn't work. When I go into the connection properties, there is a very strage padlock next to the connection. Maybe a picture would help:

Whenever that lock is there, the connection doesn't work. If i disconner and reconnect to the network, the lock will go away and the connection will work again. A few minutes later, the lock appears and the connection dies. What is going on?

 

[flat4]

did u check to see if u have firewall enabled?

 

[Boscoh]

That symbol means the firewall is enabled. If the firewall is killing your internet (it shouldn't), then just go into the properties of the connection, and disable the firewall.