Regression in 2.6.27-rcX caused by commit bc19d6e0b74ef03a3baf035412c95192b54dfc6f
Since commit bc19d6e0b74ef03a3baf035412c95192b54dfc6f entitled "b43/b43legacy: add RFKILL_STATE_HARD_BLOCKED support", the radio LED no longer responds to rfkill switch events.
ATM, I do not have a fix, other than reversion of this commit.