After installing the firmware cut from wl_apsta.o in 2.6.20-9 (as described by Jeff), I now have wireless connectivity again without resorting to booting the 2.6.20-6 kernel.
One glitch though: The wireless light on my laptop no longer lights up as it does when using the 2.6.20-6 kernel. Pressing the activate button causes the light to flash briefly, but it will not stay lit.
After installing the firmware cut from wl_apsta.o in 2.6.20-9 (as described by Jeff), I now have wireless connectivity again without resorting to booting the 2.6.20-6 kernel.
One glitch though: The wireless light on my laptop no longer lights up as it does when using the 2.6.20-6 kernel. Pressing the activate button causes the light to flash briefly, but it will not stay lit.
I have a BCM4306 rev02 wireless card.