how do I keep my Broadcom wireless card Connected?

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http://askubuntu.com – I brought a samsung netbook with a broadcom Wireless adapter BCM4313 [14e4:4727]. I did a clean install of ubuntu presise Pangolin 12.04 LTS and my issue with it is that i keep on being disconnected every minutes then it reconects it's selfs as fast as it had been dsconected. i tryes the sta driver and the open source driver and both of them gave me the same results. (HowTos)