[ubuntu] Internet stopped working

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http://ubuntuforums.org – My internet just went out on me. I originally thought the wifi card stopped working. It won't even let me "Enable wireless networking." I hooked my laptop up to the router to see if I could just reinstall the drivers. It showed my cards driver as deactivated, but it won't reactivate. When I'm hooked up directly it won't let me do anything either. (HowTos)