as the title says I did an apt-get update and now I am unable to connect to my router via my atheros card. also, the network manager is missing from the upper panel and it wont' start after typing Alt+f2 nm-applet. I wanted to get this app running since it's used in a posting of a similar problem:
http://ubuntuforums.org/showthread.p...fi+-connecting

There are also errors related to network manager when I shutdown but they go by so fast all I can make out is something about network manager and a bus...? Would these be logged anyplace for me to find?

Not sure what to do next so I'm listing what I've done so far in hopes that some ubuntu guru can point me in the right direction:

Attempted
> sudo dkpg -r network-manager-gnome network-manager
> sudo apt-get install network-manager-gnome
> sudo apt-get install network-manager
but this did not get the program to run.

Tried turning off the wifi interface, and then back on:
> sudo ifdown wifi0 --force
> sudo ifup wifi0
[output...]
There is already a pid file /var/run/dhclient.wifi0.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/

wifi0: unknown hardware address type 801
wifi0: unknown hardware address type 801
Listening on LPF/wifi0/
Sending on LPF/wifi0/
Sending on Socket/fallback
DHCPDISCOVER on wifi0 to 255.255.255.255 port 67 interval 4
DHCPDISCOVER on wifi0 to 255.255.255.255 port 67 interval 4
DHCPDISCOVER on wifi0 to 255.255.255.255 port 67 interval 11
DHCPDISCOVER on wifi0 to 255.255.255.255 port 67 interval 12
No DHCPOFFERS received.
No working leases in persistent database - sleeping.

Just in case it helps here is some of the output from ifconfig -a and lshw -C network.

thoth@alexandria:~$ ifconfig -a
ath0 Link encap:Ethernet HWaddr 00:40:f4:f3:94:84
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

eth0 Link encap:Ethernet HWaddr 00:1c:c0:23:be:7d
inet addr:192.168.1.100 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::21c:c0ff:fe23:be7d/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:13978 errors:0 dropped:0 overruns:0 frame:0
TX packets:9866 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:16710378 (15.9 MB) TX bytes:1588780 (1.5 MB)
Memory:50380000-503a0000

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:2380 errors:0 dropped:0 overruns:0 frame:0
TX packets:2380 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:119000 (116.2 KB) TX bytes:119000 (116.2 KB)

wifi0 Link encap:UNSPEC HWaddr 00-40-F4-F3-94-84-00-00-00-00-00-00-00-00-00-00
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:45254 errors:0 dropped:0 overruns:0 frame:264
TX packets:1029 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:199
RX bytes:5535928 (5.2 MB) TX bytes:47334 (46.2 KB)
Interrupt:20

thoth@alexandria:~$ sudo lshw -C network
*-network
description: Ethernet interface
product: 82566DC-2 Gigabit Network Connection
vendor: Intel Corporation
physical id: 19
bus info: pci@0000:00:19.0
logical name: eth0
version: 02
serial: 00:1c:c0:23:be:7d
size: 100MB/s
capacity: 1GB/s
width: 32 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=0.2.0 duplex=full firmware=1.3-0 ip=192.168.1.100 latency=0 link=yes module=e1000e multicast=yes port=twisted pair speed=100MB/s
*-network
description: Wireless interface
product: AR5212/AR5213 Multiprotocol MAC/baseband processor
vendor: Atheros Communications Inc.
physical id: 0
bus info: pci@0000:06:00.0
logical name: wifi0
version: 01
serial: 00:40:f4:f3:94:84
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list logical ethernet physical wireless
configuration: broadcast=yes driver=ath_pci latency=96 maxlatency=28 mingnt=10 module=ath_pci multicast=yes wireless=IEEE 802.11g
thoth@alexandria:~$