Public bug reported:

I can reliably reproduce a total system lock-up (no response to SysReq
keys) when-ever the module is removed. It occurs about 3 seconds after
the removal has completed whilst the notification of removal is still
on-screen.

sudo modprobe -r iwl3945

sudo modprobe iwl3945

uname -a
Linux hephaestion 2.6.28-11-generic #35-Ubuntu SMP Wed Mar 18 21:55:34 UTC 2009 
x86_64 GNU/Linux
lspci -nn | grep -i Wireless
06:00.0 Network controller [0280]: Intel Corporation PRO/Wireless 3945ABG 
[Golan] Network Connection [8086:4222] (rev 02)

Because the lock-up is total the log files aren't synced and therefore
the last 5 seconds or so of messages are not in the logs to help
diagnose it. Tomorrow I shall use a netconsole connection to try to get
more information.

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

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modprobe -r iwl3945 causes total system freeze
https://bugs.launchpad.net/bugs/345710
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