Reinstalling LL after losing wifi due to installing updates

[gold_finger]

Network:  Card-1: Broadcom BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller driver: wl
          IF: N/A state: N/A mac: N/A

Given that new info, go ahead an follow instructions posted by bitsnpcs a few posts ago.  Boot into installed LL (not live CD) with ethernet cable plugged-in; then open a terminal and enter the four commands in order shown in his post.  When done, reboot computer without ethernet cable attached and hopefully your wifi will be working again.

P.s.  It's entirely possible that when you enter "sudo apt-get install linux-firmware-nonfree" command it will come back saying that it's already installed.  That's fine, just continue on to next steps.