BCM4312 & 4322 intermittence description & work-around for Knoppix 7

[utu]

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Greetings, Fellow Broadcom b43 wifi users.

I think the new Knoppix 7.0.5 may have a similar problem that 7.0.4 had.

After a period of wifi connection in a crowded internet environment,
and no activity,
I occasionally find my b43 wifi is disconnected, no longer listed on the
wifi icon list and no longer looking to get re-connected. This is always
remedied by a reboot. The problem occurs rarely, and perhaps more
rarely in 7.0.5 than 7.0.4.

Similar complaints exist over may Linux distros with no real solutions
offered that I have found, other than the reboot, that is.

In Knoppix 7.0.4, I thought I might have cured this problem by adding
b43 to /etc/modules. My hope was that this might aid networkmanager to
re-install b43 if ever it is removed from the kernel due to inactivity.

I'd be interested in other b43 users' experiences in 'crowded' internet
environments, and what if any solutions they may have tried if they have
encountered this b43-disconnect phenomenon. Probably any Knoppix 7 b43
has this difficulty to some degree.