This weekend I upgraded KDE4.2 to KDE4.3.  For whatever reason, the
upgrade didn't go perfectly well, so I removed KDE4.3 and then
reinstalled it.  The second time there were no errors during the
installation, but I lot of applications/settings got lost.  Let's deal
with the networking issues first.

I thought that the networking issues may be related to Knetwork
manager (lots of forum posts about it being problematic), so I
installed Wicd.  Installing Wicd made no difference - still have the
same problems (see below).

The two main networking problems are:
(1) i can't get a wired network connection established.  I am on the
UC Davis campus in my office.  I click the button to connect and it
just hangs on "obtaining IP address".  Under the Wicd preferences tab,
I have the DHCP client, Wired Link Detection, and Route Table Flushing
all set to "automatic".  Other people in my lab running, windows, mac
and other linux distros seem to have no wired connection troubles.

(2) my ability to connect to wireless networks is also limited. I can
connect to SOME unencrypted wireless networks, e.g., I can connect to
moobilenet.  However, my labmate has a open wireless network setup
(with our lab printer on it) which I cannot connect to.  No
encryption, no MAC address filtering, just an open 802.11g access
point.    I generally cannot connect to encrypted networks.  However,
I did finally managed to get connected to my wireless DSL router at
home.

I am fairly novice Linux user, so I don't really know what information
i should be giving you in order to diagnose the problem.  But below is
the output of eight terminal commands that I hope are relevant.  Since
the output is kind of long, here is a list of the commands that I
issued and indicates the order of the output.  Maybe this will help
you jump to the important parts of the output.

% (1) sudo lshw -C network
% (2) sudo iwlist scan
% (3) lspci -nn
% (4) lsmod
% (5) route -n
% (6) uname -r
% (7) sudo iwconfig
% (8) ifconfig

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%% (1) OUTPUT OF: sudo lshw -C network
tho...@thomas-vostro1500:~$ sudo lshw -C network
[sudo] password for thomas:
  *-network
       description: Wireless interface
       product: BCM4312 802.11b/g
       vendor: Broadcom Corporation
       physical id: 0
       bus info: p...@0000:0c:00.0
       logical name: eth1
       version: 01
       serial: 00:1e:4c:c1:ec:4c
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet
physical wireless
       configuration: broadcast=yes driver=wl0 driverversion=5.10.91.9
ip=128.120.103.21 latency=0 module=wl multicast=yes wireless=IEEE
802.11bg
  *-network
       description: Ethernet interface
       product: BCM4401-B0 100Base-TX
       vendor: Broadcom Corporation
       physical id: 0
       bus info: p...@0000:03:00.0
       logical name: eth0
       version: 02
       serial: 00:1d:09:c1:e5:75
       size: 10MB/s
       capacity: 100MB/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm bus_master cap_list ethernet physical mii 10bt
10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=b44
driverversion=2.0 duplex=half latency=64 link=no module=ssb
multicast=yes port=twisted pair speed=10MB/s
  *-network:0 DISABLED
       description: Ethernet interface
       physical id: 1
       logical name: vboxnet0
       serial: 0a:00:27:00:00:00
       capabilities: ethernet physical
       configuration: broadcast=yes multicast=yes
  *-network:1 DISABLED
       description: Ethernet interface
       physical id: 2
       logical name: pan0
       serial: 82:90:9d:0f:51:17
       capabilities: ethernet physical
       configuration: broadcast=yes driver=bridge driverversion=2.3
firmware=N/A link=yes multicast=yes




%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
(2) OUTPUT OF: sudo iwlist scan
tho...@thomas-vostro1500:~$ sudo iwlist scan
lo        Interface doesn't support scanning.

eth0      Interface doesn't support scanning.

eth1      Scan completed :
          Cell 01 - Address: 00:0B:86:F4:47:00
                    ESSID:"moobilenetx"
                    Mode:Managed
                    Frequency:2.412 GHz (Channel 1)
                    Quality:5/5  Signal level:-52 dBm  Noise level:-88 dBm
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : TKIP
                        Authentication Suites (1) : 802.1x
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
                              11 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
          Cell 02 - Address: 00:0B:86:F4:47:01
                    ESSID:"moobilenet"
                    Mode:Managed
                    Frequency:2.412 GHz (Channel 1)
                    Quality:5/5  Signal level:-52 dBm  Noise level:-88 dBm
                    Encryption key:off
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
                              11 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
          Cell 03 - Address: 00:0D:3A:6B:E8:C7
                    ESSID:"biosport"
                    Mode:Managed
                    Frequency:2.437 GHz (Channel 6)
                    Quality:5/5  Signal level:-35 dBm  Noise level:-90 dBm
                    Encryption key:off
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s; 6 Mb/s; 9 Mb/s
                              12 Mb/s; 48 Mb/s
          Cell 04 - Address: 00:90:4B:34:AD:D4
                    ESSID:"WAP2338"
                    Mode:Managed
                    Frequency:2.437 GHz (Channel 6)
                    Quality:5/5  Signal level:-51 dBm  Noise level:-90 dBm
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s; 6 Mb/s; 9 Mb/s
                              12 Mb/s; 48 Mb/s
          Cell 05 - Address: 00:06:25:90:03:55
                    ESSID:"crestron"
                    Mode:Managed
                    Frequency:2.437 GHz (Channel 6)
                    Quality:5/5  Signal level:-49 dBm  Noise level:-90 dBm
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s
          Cell 06 - Address: 00:21:29:C3:41:63
                    ESSID:"ITSnet"
                    Mode:Managed
                    Frequency:2.437 GHz (Channel 6)
                    Quality:1/5  Signal level:-80 dBm  Noise level:-90 dBm
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s; 6 Mb/s; 9 Mb/s
                              12 Mb/s; 48 Mb/s
          Cell 07 - Address: 00:18:39:6A:0C:F9
                    ESSID:"ITSnet"
                    Mode:Managed
                    Frequency:2.462 GHz (Channel 11)
                    Quality:5/5  Signal level:-49 dBm  Noise level:-88 dBm
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s; 6 Mb/s; 9 Mb/s
                              12 Mb/s; 48 Mb/s
          Cell 08 - Address: 00:21:29:70:F7:F5
                    ESSID:"DAS 1028"
                    Mode:Managed
                    Frequency:2.462 GHz (Channel 11)
                    Quality:2/5  Signal level:-73 dBm  Noise level:-88 dBm
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s; 6 Mb/s; 9 Mb/s
                              12 Mb/s; 48 Mb/s
          Cell 09 - Address: 02:23:FE:AE:0E:DE
                    ESSID:"print server 206450"
                    Mode:Ad-Hoc
                    Frequency:2.462 GHz (Channel 11)
                    Quality:2/5  Signal level:-79 dBm  Noise level:-88 dBm
                    Encryption key:off
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s

vboxnet0  Interface doesn't support scanning.

pan0      Interface doesn't support scanning.



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%% (3) OUTPUT OF: lspci -nn
tho...@thomas-vostro1500:~$ lspci -nn
00:00.0 Host bridge [0600]: Intel Corporation Mobile PM965/GM965/GL960
Memory Controller Hub [8086:2a00] (rev 0c)
00:01.0 PCI bridge [0604]: Intel Corporation Mobile PM965/GM965/GL960
PCI Express Root Port [8086:2a01] (rev 0c)
00:1a.0 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family)
USB UHCI Controller #4 [8086:2834] (rev 02)
00:1a.1 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family)
USB UHCI Controller #5 [8086:2835] (rev 02)
00:1a.7 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family)
USB2 EHCI Controller #2 [8086:283a] (rev 02)
00:1b.0 Audio device [0403]: Intel Corporation 82801H (ICH8 Family) HD
Audio Controller [8086:284b] (rev 02)
00:1c.0 PCI bridge [0604]: Intel Corporation 82801H (ICH8 Family) PCI
Express Port 1 [8086:283f] (rev 02)
00:1c.1 PCI bridge [0604]: Intel Corporation 82801H (ICH8 Family) PCI
Express Port 2 [8086:2841] (rev 02)
00:1c.3 PCI bridge [0604]: Intel Corporation 82801H (ICH8 Family) PCI
Express Port 4 [8086:2845] (rev 02)
00:1d.0 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family)
USB UHCI Controller #1 [8086:2830] (rev 02)
00:1d.1 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family)
USB UHCI Controller #2 [8086:2831] (rev 02)
00:1d.2 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family)
USB UHCI Controller #3 [8086:2832] (rev 02)
00:1d.7 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family)
USB2 EHCI Controller #1 [8086:2836] (rev 02)
00:1e.0 PCI bridge [0604]: Intel Corporation 82801 Mobile PCI Bridge
[8086:2448] (rev f2)
00:1f.0 ISA bridge [0601]: Intel Corporation 82801HEM (ICH8M) LPC
Interface Controller [8086:2815] (rev 02)
00:1f.1 IDE interface [0101]: Intel Corporation 82801HBM/HEM
(ICH8M/ICH8M-E) IDE Controller [8086:2850] (rev 02)
00:1f.2 IDE interface [0101]: Intel Corporation 82801HBM/HEM
(ICH8M/ICH8M-E) SATA IDE Controller [8086:2828] (rev 02)
00:1f.3 SMBus [0c05]: Intel Corporation 82801H (ICH8 Family) SMBus
Controller [8086:283e] (rev 02)
01:00.0 VGA compatible controller [0300]: nVidia Corporation GeForce
8600M GT [10de:0407] (rev a1)
03:00.0 Ethernet controller [0200]: Broadcom Corporation BCM4401-B0
100Base-TX [14e4:170c] (rev 02)
03:01.0 FireWire (IEEE 1394) [0c00]: Ricoh Co Ltd R5C832 IEEE 1394
Controller [1180:0832] (rev 05)
03:01.1 SD Host controller [0805]: Ricoh Co Ltd R5C822
SD/SDIO/MMC/MS/MSPro Host Adapter [1180:0822] (rev 22)
03:01.2 System peripheral [0880]: Ricoh Co Ltd R5C592 Memory Stick Bus
Host Adapter [1180:0592] (rev 12)
03:01.3 System peripheral [0880]: Ricoh Co Ltd xD-Picture Card
Controller [1180:0852] (rev 12)
0c:00.0 Network controller [0280]: Broadcom Corporation BCM4312
802.11b/g [14e4:4315] (rev 01)
tho...@thomas-vostro1500:~$


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%% (4) OUTPUT OF: lsmod
tho...@thomas-vostro1500:~$ lsmod
Module                  Size  Used by
binfmt_misc            16776  1
ppdev                  15620  0
bridge                 56212  0
stp                    10500  1 bridge
bnep                   20224  2
vboxnetadp             88552  0
vboxnetflt             95240  0
vboxdrv               130344  1 vboxnetflt
input_polldev          11912  0
joydev                 18368  0
lp                     17156  0
parport                42220  2 ppdev,lp
snd_hda_intel         436148  3
snd_pcm_oss            46336  0
snd_mixer_oss          22656  1 snd_pcm_oss
snd_pcm                83076  2 snd_hda_intel,snd_pcm_oss
snd_seq_dummy          10756  0
snd_seq_oss            37760  0
snd_seq_midi           14336  0
snd_rawmidi            29696  1 snd_seq_midi
snd_seq_midi_event     15104  2 snd_seq_oss,snd_seq_midi
snd_seq                56880  6
snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
uvcvideo               63368  0
snd_timer              29704  2 snd_pcm,snd_seq
snd_seq_device         14988  5
snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
compat_ioctl32          9344  1 uvcvideo
psmouse                61972  0
videodev               41600  1 uvcvideo
ieee80211_crypt_tkip    16896  0
iTCO_wdt               19108  0
snd                    62756  15
snd_hda_intel,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
soundcore              15200  1 snd
v4l1_compat            21764  2 uvcvideo,videodev
btusb                  19608  2
wl                   1281364  0
sdhci_pci              15232  0
sdhci                  23940  1 sdhci_pci
iTCO_vendor_support    11652  1 iTCO_wdt
usbhid                 42336  0
snd_page_alloc         16904  2 snd_hda_intel,snd_pcm
dcdbas                 15264  0
nvidia               7233756  42
serio_raw              13444  0
pcspkr                 10496  0
ieee80211_crypt        13444  2 ieee80211_crypt_tkip,wl
intel_agp              34108  0
agpgart                42696  2 nvidia,intel_agp
video                  25872  6
output                 11008  1 video
b44                    35984  0
ssb                    41220  1 b44
mii                    13312  1 b44
ohci1394               38576  0
ieee1394               94660  1 ohci1394
fbcon                  46112  0
tileblit               10752  1 fbcon
font                   16384  1 fbcon
bitblit                13824  1 fbcon
softcursor              9984  1 bitblit


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%% (5) OUTPUT OF: route -n
tho...@thomas-vostro1500:~$ route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
128.120.103.0   0.0.0.0         255.255.255.0   U     0      0        0 eth1
0.0.0.0         128.120.103.254 0.0.0.0         UG    0      0        0 eth1


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%% (6) OUTPUT OF: uname -r
tho...@thomas-vostro1500:~$ uname -r
2.6.28-16-generic


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%% (7) OUTPUT OF: sudo iwconfig
tho...@thomas-vostro1500:~$ sudo iwconfig
[sudo] password for thomas:
lo        no wireless extensions.

eth0      no wireless extensions.

eth1      IEEE 802.11bg  ESSID:"moobilenet"  Nickname:""
          Mode:Managed  Frequency:2.412 GHz  Access Point: 00:0B:86:F4:47:01
          Bit Rate=54 Mb/s   Tx-Power:32 dBm
          Retry min limit:7   RTS thr:off   Fragment thr:off
          Power Managementmode:All packets received
          Link Quality=4/5  Signal level=-59 dBm  Noise level=-86 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

vboxnet0  no wireless extensions.

pan0      no wireless extensions.



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%% (8) OUTPUT OF: ifconfig
tho...@thomas-vostro1500:~$ ifconfig
eth0      Link encap:Ethernet  HWaddr 00:1d:09:c1:e5:75
          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:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:17

eth1      Link encap:Ethernet  HWaddr 00:1e:4c:c1:ec:4c
          inet addr:128.120.103.21  Bcast:128.120.103.255  Mask:255.255.255.0
          inet6 addr: fe80::21e:4cff:fec1:ec4c/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:54830 errors:0 dropped:0 overruns:0 frame:143562
          TX packets:5004 errors:8 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:13816966 (13.8 MB)  TX bytes:1109281 (1.1 MB)
          Interrupt:17 Base address:0xc000

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:44 errors:0 dropped:0 overruns:0 frame:0
          TX packets:44 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:2640 (2.6 KB)  TX bytes:2640 (2.6 KB)
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