BCM4313 partially working on Toshiba Satellite R630 (Ubuntu 12.10)

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http://askubuntu.com – New to Ubuntu. During installation, the computer identified the wifi card and asked me to connect to the network. I did. After the first restart the wifi was working and I could see networks and connect to them. After the second restart the wireless has VANISHED. Still, the Broadcom STA drivers are enabled in system settings/additional drivers. Tried to restart 5 more times- no effect. I have studied very many topics on askubuntu but none of them work. (HowTos)