This driver utterly fails for my BCM4313. My wifi worked perfectly under Quantal. I upgraded to Raring and it was unusable. Then I installed bcmwl-kernel-source 22.214.171.124 from Quantal, and it works perfectly again.
This driver MUST be split, and the 126.96.36.199 driver MUST be used for older devices. This is a MAJOR REGRESSION.