Bring Broadcom STA modules back.
Background info: http://wiki.debian.org/brcm80211 http://wiki.debian.org/wl User reports concur to indicate that the free brcm80211 / brcmsmac module are not on par with Broadcom's one, unfortunately. Installing from unstable for compatibility with newer kernels. Additionally, the package from unstable automatically blacklists the conflicting brcm80211 and brcmsmac modules. See Debian bugs #597786, #601009 and #611539 for details.