Wen I say no more wireless operations are allowed, I mean that it is not 
possible to make the interface go up again. Moreover, it is not possible to 
remove the module. The command

modprobe -r ndiswrapper

hangs and never exits.

While not yet extensively tested, after trying to remove the module it seems 
that applications relying on the network also hang. For example, it is not 
possible to interact with kicker.

A reboot via telinit 6  (or other method) is allowed, but filesystems fail to 
close cleanly.
After this the message

Aug 15 21:48:26 localhost kernel: unregister_netdevice: waiting for wlan0 to 
become free. Usage count = 7

is repeatedly outputed to the console and registered in syslog

The information in syslog when ndiswrapper starts up is

Aug 15 21:51:06 localhost kernel: ndiswrapper version 1.18 loaded 
(preempt=no,smp=no)
Aug 15 21:51:06 localhost kernel: ndiswrapper: driver bcmwl5a 
(Broadcom,04/09/2004, 3.40.69.0) loaded
Aug 15 21:51:06 localhost kernel: PCI: Enabling device 0000:03:00.0 (0000 -> 
0002)
Aug 15 21:51:06 localhost kernel: ACPI: PCI Interrupt 0000:03:00.0[A] -> Link 
[LNKA] -> GSI 5 (level, low) -> IRQ 5
Aug 15 21:51:06 localhost kernel: PCI: Setting latency timer of device 
0000:03:00.0 to 64
Aug 15 21:51:06 localhost kernel: ndiswrapper: using irq 5
Aug 15 21:51:06 localhost kernel: wlan0: vendor: ''
Aug 15 21:51:06 localhost kernel: wlan0: ndiswrapper ethernet device 
00:0e:a6:9d:ab:75 using driver bcmwl5a, 14E4:4320.5.conf
Aug 15 21:51:06 localhost kernel: wlan0: encryption modes supported: WEP; TKIP 
with WPA; AES/CCMP with WPA

If there are more details I can give please let me know

Thanks
-- 
_____________________________________________________________
Pedro Celestino dos Reis Rodrigues
Departamento de Química e Bioquímica
Faculdade de Ciências da Universidade de Lisboa
Tel: 21750000-28619

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