Wireless doesn't work after apt-get upgrade

[megamall]

I'm using Intel wireless 3945abg. It used to work perfectly until I did some upgrades yesterday.

I upgraded using Synaptics Package Manager>Marked all upgradeables>Apply.
I'm not sure what caused the problem, but one of the upgrades was this madwifi-drivers. Could this be the cause of the problem?

In wicd, it just says there are 'no wireless networks detected.'

wlan0 is not visible when i typed ifconfig in the console.
but it's listed when ifconfig -a is typed.

When i typed 'ifconfig wlan0 up'
i get this error message

SIOCSIFFLAGS: No such file or directory

typing these
modprobe -r iwl3945
modprobe iwl3945

doesn't help either.

in dmesg, there are these error messages.
iwl3945 0000:0c:00.0: firmware: requesting iwlwifi-3945-2.ucode
iwl3945 0000:0c:00.0: iwlwifi-3945-2.ucode firmware file req failed: -2
iwl3945 0000:0c:00.0: firmware: requesting iwlwifi-3945-1.ucode
iwl3945 0000:0c:00.0: iwlwifi-3945-1.ucode firmware file req failed: -2
iwl3945 0000:0c:00.0: Could not read microcode: -2



I tried installing firmware-iwlwifi, but still get the same error message
Tried reverting back to kernel 2.6.30.9, but the same error persists

I'm not really good with linux and I'm totally clueless about the cause of the problem.
How do I rectify the problem?

I've googled and searched the forum, but things that i got don't seem to fix the problem..

Any help is greatly appreciated.....

[Snayler]

Take a look at the following post:

http://www.backtrack-linux.org/forum...tml#post167467