I have an ACER Aspire One 722 running Linux Mint 13 Maya Mate 64bit. I have not had any problems and it has been running great, until today.
Update Manager notified me of an update to the bcmwl-kernel-source. Having been a long time user of Linux Mint (since version 9) and never having had a problem installing an update, I went ahead and installed it. I was connected to a wired connection on my office network at the time. When I got home this evening and booted up I was unable to get a wireless connection. Since I knew that the only thing that had changed was the wireless driver, I immediately knew what the problem was.
I removed the updated driver, version 220.127.116.11 (r326264), (sudo apt-get purge bcmwl-kernel-source), then connected to a wired connection and downloaded bcmwl-kernel-source_18.104.22.168+bdcom-0ubuntu3.2_amd64.deb. I double-clicked the downloaded file and let the Package Installer install it. I ignored the warning about a newer version being available the repository.
After rebooting, the wireless connection came up immediately.
Hope this helps someone else.