Ian,

There are numerous improvements in b43 since 2.6.24, but one of the
major advances have been in mac80211's speed-setting algorithm. To get
those changes you would need the 2.6.25 kernel, or the kernels from the
mainline or wireless-testing git trees. They are too intrusive for a
simple patch.

As a work-around, use the command 'sudo iwconfig wlan0 rate 24M'. Adjust
the "wlan0" as needed for your system. You can test that speed with a
'sudo ping -f <your router's address>'. If you see a lot of dots, that
rate is too fast, but that shouldn't happen. If 24M works as expected,
increase the rate by using 36M, 48M, or 54M. Whatever speed you end up
using will need to be reentered every time you boot.

Larry

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Broadcom BCM4312 rev 02 HPCompaq 6720s
https://bugs.launchpad.net/bugs/223599
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