I am using the -10 proposed kernel on a Lenovo X301 with Intel 5300
wifi. So I should be using the iwlagn module. It is working for me and
no more kernel messages. Still not perfect though, the wifi interface
does not come up after a suspend or hibernate. I have to do a

  sudo ifconfig wlan0 up

after any suspend or hibernate. I actually built it into a sleep.d
script. Now I reliably get the interface back on resume/thaw.

As long as I bring up the interface fast enough, NetworkManager does
reconnect me, though it takes it 10-20 seconds to start reconnecting me.

If I don't manually bring up the interface fast enough after a
resume/thaw, I also find I need to restart NetworkManager to convince it
to notice the wifi interface and reconnect.

-- 
kernel 2.6.27-7-generic bug BUG: scheduling while atomic: swapper/0/0x00000100
https://bugs.launchpad.net/bugs/286285
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