Comment 18 for bug 1142385

Interesting, so we both definitely have the same card and are affected by the same issue. What do you get when you run the firmware-b43-installer? Does the terminal output anything about an unsupported device with the PCI ID tag?
Odd that rc8 of 3.9 seemed to fix this and then the final 3.9 kernel (which I'm sure is virtually the same?) seemed to fix it for you.
I will reinstall again later and try the rc8 kernel and see if the fix is present for me.