How to fix wireless issue in Dell d430/d830 or Acer Aspire 7520 with Broadcom BCM4311

After upgrading my laptop to ubuntu 12.10 wireless stopped working so i have to run the following commands from terminal

sudo apt-get remove bcmwl-kernel-source
sudo apt-get install firmware-b43-installer b43-fwcutter

Use your wired connection to connect to run the above commands.