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[ubuntu] 11.1 wireless not working on laptop

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http://ubuntuforums.org – I just upgraded from 11.04 to 11.1 and now I have no built-in wireless. It does seem to be receiving since I can see the various systems in my neighbourhood including my own, but I'm not able to connect. When I plug my USB (Belkin) in it works fine. When I go upto the network icon and click on new network it shows Atheros AR242x/AR542x wireless network adapter (PCI-Express), and for the USB it shows Realtek Connect Wireless USB adapter. Any words of wisdom to get the built-In wireless working? (Hardware)