[ubuntu] BCM4331 problems

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http://ubuntuforums.org – For some reason recently my wireless connection is unstable, it connects for a while then dces and cant establish connection anymore Code: 03:00.0 Network controller: Broadcom Corporation BCM4331 802.11a/b/g/n (rev 02) i tried fixing it by using this https://help.ubuntu.com/community/Ma...eiric#Wireless but it didnt fix it I have ubuntu 12.04 LTS (Hardware)