MBP b43 wireless
I have found recently after about 3.7 that b43 wireless with most access points is quite flakey. Thankfully, a fellow student, Kram found this great blog post about getting it to work.
For the moment, you have to rebuild the module by hand on update, but it's a make, make install, dracut away.
The only thing missed is that at the end:
Put the blacklist options into their own wl.conf rather than the main blacklist for finding them.
You need to rebuild your dracut image. The following should work:
cd /boot/ mv initramfs-[current kernel here] initramfs-[kernel].back dracut