tl;dr version: Additional Drivers does not work for enabling a driver in Ubuntu 12.10, however it worked in 12.04.

I upgraded to Ubuntu 12.10 from 12.04 via a live USB. I did a fresh install to avoid any conflicts. From 12.04 I know that my wireless card has proprietary drivers that could be installed via Additional Drivers. I did eventually find additional drivers in the software sources menu, however when I attempt to switch to Broadcom 802.11 Linux STA wireless driver source from bcmwl-kernel-source, it not only does not work, it in fact disables my wireless completely. The only way to revert this is to restart, and revert back to "do not use the device". Then upon another restart, my wireless will function once again. I was curious if anyone else had this issue, and if there was a fix for it as of yet. I looked on launchpad and it may be a potential bug, but I am unsure.

Any help would be greatly appreciated (and sorry for that wall of text). Until then, I'll continue to use my wireless as it is (or revert to 12.04), but I do notice a slower connection without it enabled.