Public bug reported:

I've got a Thinkpad T60 with an Intel 3945 WiFi chip. I can no longer
connect to my WiFi access point, which is a big problem for me as it's
my only way to access to the Internet. I'm using Hardy since its
release, and all was working fine until one of the recent kernel
upgrade. Now, the network manager keeps asking me my password when I try
to connect to the access point.

Here is the output of dmesg:

[   63.414860] NET: Registered protocol family 17
[   64.567806] wlan0: Initial auth_alg=1
[   64.567814] wlan0: authenticate with AP 00:a0:c5:44:ac:22
[   64.568960] wlan0: RX authentication from 00:a0:c5:44:ac:22 (alg=1 
transaction=2 status=0)
[   64.568966] wlan0: replying to auth challenge
[   64.570631] wlan0: RX authentication from 00:a0:c5:44:ac:22 (alg=1 
transaction=4 status=0)
[   64.570638] wlan0: authenticated
[   64.570642] wlan0: associate with AP 00:a0:c5:44:ac:22
[   64.572143] wlan0: RX AssocResp from 00:a0:c5:44:ac:22 (capab=0x1 status=0 
aid=4)
[   64.572148] wlan0: associated
[   64.575696] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[   67.574102] wlan0: no IPv6 routers present
[   75.958192] wlan0: deauthenticate(reason=3)
[   75.965362] wlan0: privacy configuration mismatch and mixed-cell disabled - 
disassociate
[   76.623020] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623029] wlan0: deauthenticated
[   76.623036] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623042] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623047] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623053] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623059] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623064] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623070] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623076] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623083] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623088] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623094] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623100] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623106] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623112] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623118] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623123] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623129] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623135] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623141] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623147] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623152] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623158] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623164] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623170] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623176] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623182] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623187] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623193] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623199] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623205] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623210] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623216] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623222] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623228] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623234] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623239] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623245] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623251] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623257] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623262] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623268] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623274] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623280] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623286] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623292] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623297] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623303] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623309] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623315] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623321] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623327] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623333] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623338] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623344] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.623350] wlan0: RX deauthentication from 00:a0:c5:44:ac:22 (reason=6)
[   76.628290] wlan0: Initial auth_alg=0
[   76.628297] wlan0: authenticate with AP 00:a0:c5:93:18:e4
[   76.628318] wlan0: deauthentication frame received from unknown AP 
(SA=00:a0:c5:44:ac:22 BSSID=00:a0:c5:44:ac:22) - ignored
[   76.630085] wlan0: Initial auth_alg=0
[   76.630091] wlan0: authenticate with AP 00:a0:c5:93:18:e4
[   76.630105] wlan0: RX authentication from 00:a0:c5:93:18:e4 (alg=0 
transaction=2 status=0)
[   76.630110] wlan0: authenticated
[   76.630114] wlan0: associate with AP 00:a0:c5:93:18:e4
[   76.632582] wlan0: authentication frame received from 00:a0:c5:93:18:e4, but 
not in authenticate state - ignored
[   76.636753] wlan0: RX AssocResp from 00:a0:c5:93:18:e4 (capab=0x451 status=0 
aid=3)
[   76.636758] wlan0: associated

** Affects: network-manager (Ubuntu)
     Importance: Undecided
         Status: New

** Changed in: network-manager (Ubuntu)
Sourcepackagename: None => network-manager

-- 
[Hardy] Unable to connect to WEP access point since recent kernel upgrade
https://bugs.launchpad.net/bugs/243750
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