[ubuntu] Wireless Networks Not Being Detected

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http://ubuntuforums.org – Hi. I just installed Ubuntu OS 9.10 and i am having an issue. The issue is that when i went to connect to my wireless network it wasn't displaying in the wireless networks drop down menu. All it said was "Disconnected". When i went to "Hardware Drivers" it says "no proprietary drivers are in use on this system". But my inbuilt wireless is installed and the light is showing its working. I am on a Acer Aspire 5920 (Hardware)