[Bug 389713] [NEW] wireless connection randomly disabled

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This bug has been happening to me in Feisty, Hardy and now Jaunty. The
machine is a 64-bit Acer Ferrari 4002, with a BCM4318 Airforce One 54g
wireless chipset.

After installation, everything works perfectly. With previous versions I
had to make the wireless connection work with ndiswrapper, but since the
"restricted drivers" feature, it was quite direct.

For some reason I can't tell, sometimes the wireless connection stops
working. The laptopt disconnects from my home network and -here's the
kick- the network manager applet stops showing any wireless networks at
all. Now there are a dozen of them, now they are apparently gone (they
are not, since I can see them with other XP-based machines).

Sometimes I get the connection back after a few days of using the
Ethernet cable, sometimes I try some of the workarounds I can fin in the
web, and sometimes I end up reinstalling Ubuntu.

So, wrapping up:
- The network applet stops showing any wireless network (doesn't matter either they are WEP, WAP, broadcasting SSID or not, etc.)
- nm-tool tells me the Driver is b43 and the State is Disabled.
- dmesg shows:
[   26.980043] b43-phy0: Radio hardware status changed to DISABLED
[   26.996091] b43-phy0: Radio turned on by software
[   26.996096] b43-phy0: The hardware RF-kill button still turns the radio physically off. Press the button to turn it on.

What I expected to happen: having consistent wireless connection.
What happened instead: I don't have wireless connection and I don't know if it's a driver problem or something going awry in my laptop.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete

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wireless connection randomly disabled 
https://bugs.launchpad.net/bugs/389713
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