Dell 1390 wireless (BCM4311) Ubuntu 12.04 no wireless icon in unity

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http://askubuntu.com – I have a Dell Inspiron 1520, which has the Dell Wireless 1390 card (based on the BCM4311 chipset). During installation, Ubuntu 12.04 detected the device and installed the Broadcom STA driver. However, Unity is not showing an icon for the wireless device, so I am unable to connect to any networks. Any ideas what I need to do to get this working? (HowTos)