[ubuntu] Wireless encryption problem?

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http://ubuntuforums.org – I can't seem to establish a wireless Internet connection with my router. It seems my computer is avoiding it whenever possibly while trying to connect to it by automatically switching to a different network and then issuing a "Failed to connect to [different network name] report" a few times before finally giving up. Even selecting the network changes it to a different one. Also, this never happens when I connect to a non-encrypted network. (Hardware)