Hi,

2 days ago I proposed a patch which fixes the crash you reported in ticket 
#141. Although you confirmed the patch solves the issue I haven't pushed it yet 
as the cause seems to be a bug within the Intel driver and should be fixed 
there (unless we do something horribly wrong). 
Could you please let us know the driver version that was used in your test 
setup ? A 'modinfo iwlagn | grep version' should do. We will then get in touch 
with the Intel wifi maintainers.

Regards,
Marek