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Solution 2: Disable security (for time being) on your router and try. Solution 1: Disable all antivirus or firewalls then check again. If you are still bothered by it, here is the solutions.
Lb Link Wifi Dongle Driver For Ubuntu
802.11n USB Wireless LAN Card Driver for Ubuntu 11.10 Solution 5: Check if you have IP range for static in case if you are using.802.11n USB Wireless LAN Card Driver for Ubuntu802.11n USB Wireless LAN card can not only work on Windows system, but also can work on Linux, including Ubuntu 11.10, Ubuntu 11.04. Solution 4: Check the compatibility of your usb with your secured router.
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