Comment 4 for bug 365321

I also experience this, and reloading the wireless modules helps usually:

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#!/bin/sh

sudo rmmod iwlagn
sudo rmmod iwlcore
sudo rmmod mac80211
sudo rmmod cfg80211

sleep 2

sudo modprobe iwlagn
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I just installed the backport modules, and will see if they help with this bug as well as my regular network freezes.

Ciao

Martin