I can confirm problems with gutsy and the 3945 on a T61.  Some days it
will stay connected the whole night.. others it will go into its weird
state 3 times.  Once it has done it, it seems to cause the whole machine
to crash slowly if I attempt to reconnect.   attempting to rmmod the
ipw3945 hangs forever (+D state), new processes wont launch, etc. I'm
forced to hold the power button down for 10 seconds to reboot.

This is a regression, wifi was working pretty well in feisty.  (I
installed feisty fresh, and then upgraded to gutsy)

I have confirmed the bug with WPA PSK, and WPA2 at work. I haven't
connected to any open networks to confirm it in open mode.

I have all the IRQ's in the bios set to "auto" instead of factory
default 11, which makes the laptop much more stable otherwise in linux.

-- 
ipw3945 hangs intermittently on Thinkpad T61
https://bugs.launchpad.net/bugs/141396
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