Comment 18 for bug 190968

I'm assuming my problems are related. Going to try the kernel downgrade if I still have the sources...
Based on forum suggestion I attempted commenting out the udev rename of wlan0 to eth1 - didn't help.
Nor did noapic as was another suggestion.

# modinfo iwl3945
filename: /lib/modules/2.6.24-12-generic/ubuntu/wireless/iwlwifi/iwlwifi/compatible/iwl3945.ko
license: GPL
author: Copyright(c) 2003-2007 Intel Corporation
version: 1.2.0
description: Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux
srcversion: 8E95C617988943846696F97
alias: pci:v00008086d00004227sv*sd*bc*sc*i*
alias: pci:v00008086d00004222sv*sd*bc*sc*i*
depends: iwlwifi_mac80211
vermagic: 2.6.24-12-generic SMP mod_unload 586
parm: antenna:select antenna (1=Main, 2=Aux, default 0 [both]) (int)
parm: disable:manually disable the radio (default 0 [radio on]) (int)
parm: hwcrypto:using hardware crypto engine (default 0 [software])
 (int)
parm: debug:debug output mask (int)
parm: disable_hw_scan:disable hardware scanning (default 0) (int)
parm: queues_num:number of hw queues. (int)
parm: qos_enable:enable all QoS functionality (int)

# ifup wlan0
There is already a pid file /var/run/dhclient.wlan0.pid with pid 134519072
Internet Systems Consortium DHCP Client V3.0.6
Copyright 2004-2007 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

wmaster0: unknown hardware address type 801
wmaster0: unknown hardware address type 801
Listening on LPF/wlan0/00:18:de:1e:a4:12
Sending on LPF/wlan0/00:18:de:1e:a4:12
Sending on Socket/fallback
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 3
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 6
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 15
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7
No DHCPOFFERS received.
No working leases in persistent database - sleeping.

Below is dmesg from the above ifup.

[ 408.723429] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 409.072122] wlan0: Initial auth_alg=0
[ 409.072131] wlan0: authenticate with AP 00:19:e4:08:d7:59
[ 409.073244] wlan0: RX authentication from 00:19:e4:08:d7:59 (alg=0 transaction=2 status=0)
[ 409.073251] wlan0: authenticated
[ 409.073254] wlan0: associate with AP 00:19:e4:08:d7:59
[ 409.074710] wlan0: RX ReassocResp from 00:19:e4:08:d7:59 (capab=0x431 status=0 aid=1)
[ 409.074717] wlan0: associated
[ 409.078316] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 410.681677] wlan0: no IPv6 routers present
[ 410.745110] wlan0: disassociate(reason=3)
[ 411.217442] wlan0: RX deauthentication from 00:19:e4:08:d7:59 (reason=6)
[ 411.217449] wlan0: deauthenticated
[ 411.217457] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 411.217463] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 411.217468] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 411.217474] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 411.217480] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 411.217485] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 411.217561] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 411.217566] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 411.217572] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 411.217578] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 411.217583] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 411.217589] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 411.217595] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 411.217600] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 411.217606] wlan0: authenticate with AP 00:19:e4:08:d7:59
[ 411.218652] wlan0: RX authentication from 00:19:e4:08:d7:59 (alg=0 transaction=2 status=0)
[ 411.218658] wlan0: authenticated
[ 411.218664] wlan0: associate with AP 00:19:e4:08:d7:59
[ 411.220932] wlan0: Initial auth_alg=0
[ 411.220937] wlan0: authenticate with AP 00:19:e4:08:d7:59
[ 411.220952] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 411.220959] wlan0: association frame received from 00:19:e4:08:d7:59, but not in associate state - ignored
[ 411.221704] wlan0: Initial auth_alg=0
[ 411.221709] wlan0: authenticate with AP 00:19:e4:08:d7:59
[ 411.223465] wlan0: RX authentication from 00:19:e4:08:d7:59 (alg=0 transaction=2 status=0)
[ 411.223472] wlan0: authenticated
[ 411.223476] wlan0: associate with AP 00:19:e4:08:d7:59
[ 411.225819] wlan0: RX ReassocResp from 00:19:e4:08:d7:59 (capab=0x431 status=
0 aid=1)
[ 411.225830] wlan0: associated
[ 413.181090] wlan0: disassociate(reason=3)
[ 413.791456] wlan0: RX deauthentication from 00:19:e4:08:d7:59 (reason=6)
[ 413.791463] wlan0: deauthenticated
[ 413.791470] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 413.791476] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 413.791482] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 413.791487] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 413.791493] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 413.791499] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 413.791505] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 413.791510] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 413.791516] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 413.791521] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 413.791527] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 413.791532] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 413.791538] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 413.791543] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 413.791549] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 413.791554] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 413.791559] wlan0: authenticate with AP 00:19:e4:08:d7:59
[ 413.793096] wlan0: Initial auth_alg=0
[ 413.793102] wlan0: authenticate with AP 00:19:e4:08:d7:59
[ 413.793119] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 413.796177] wlan0: Initial auth_alg=0
[ 413.796183] wlan0: authenticate with AP 00:19:e4:08:d7:59
[ 413.796198] wlan0: RX authentication from 00:19:e4:08:d7:59 (alg=0 transaction=2 status=0)
[ 413.796204] wlan0: authenticated
[ 413.796209] wlan0: associate with AP 00:19:e4:08:d7:59
[ 413.797402] wlan0: authentication frame received from 00:19:e4:08:d7:59, but not in authenticate state - ignored
[ 413.800364] wlan0: RX ReassocResp from 00:19:e4:08:d7:59 (capab=0x431 status=0 aid=1)
[ 413.800370] wlan0: associated
[ 415.274607] wlan0: disassociate(reason=3)
[ 415.704501] wlan0: RX deauthentication from 00:19:e4:08:d7:59 (reason=6)
[ 415.704510] wlan0: deauthenticated
[ 415.704517] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 415.704578] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 415.704584] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 415.704589] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 415.704595] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 415.704601] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 415.704607] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 415.704612] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 415.704618] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 415.704624] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 415.704630] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 415.704635] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 415.704641] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 415.704646] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 415.704652] wlan0: authenticate with AP 00:19:e4:08:d7:59
[ 415.706325] wlan0: Initial auth_alg=0
[ 415.706333] wlan0: authenticate with AP 00:19:e4:08:d7:59
[ 415.706353] wlan0: RX disassociation from 00:19:e4:08:d7:59 (reason=7)
[ 415.707537] wlan0: Initial auth_alg=0
[ 415.707543] wlan0: authenticate with AP 00:19:e4:08:d7:59
[ 415.707561] wlan0: RX authentication from 00:19:e4:08:d7:59 (alg=0 transaction=2 status=0)
[ 415.707566] wlan0: authenticated
[ 415.707572] wlan0: associate with AP 00:19:e4:08:d7:59
[ 415.709302] wlan0: authentication frame received from 00:19:e4:08:d7:59, but not in authenticate state - ignored
[ 415.709810] wlan0: authentication frame received from 00:19:e4:08:d7:59, but not in authenticate state - ignored
[ 415.712314] wlan0: RX ReassocResp from 00:19:e4:08:d7:59 (capab=0x431 status=0 aid=1)
[ 415.712322] wlan0: associated
[ 417.275081] wlan0: disassociate(reason=3)