[ubuntu] unable to connect to wireless network

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http://ubuntuforums.org – Hi All, I am new to linux/Ubuntu and need some help! I have a new Dell Precision M6400 core I7 laptop. i am not able to connect to wireless network. i tried all options in the config guide but still was not successful. In the additional Drivers window i see that it is using Broadcom STA wireless driver. I can see my SSID but just cannot connect to it. when i do sudo lshw -C network i get this? *-network description: Wireless interface product: BCM4313 802.11b/g/n Wireless LAN Controller vendor: Broadcom Corporation physical (Hardware)