Trouble running 0.7

[Geoff Buchan <esranba comcast net>]

I've been trying to run NetworkManager 0.7, as well as nm-applet 0.7,
but I've not been able to get it to connect to or even see any wireless
networks.

The programs seem to start and run, but with error messages. When I run
nm-applet, I see:
WARNING **: Could not retrieve dbus connections: Launch helper exited with unknown return code 1.


The applet appears in my panel, but the menu choices for Wired Network,
Auto Ethernet, and Wireless Networks are all grey and not selectable.

When I first start NetworkManager, I see the following
in /var/log/syslog:
Nov 18 06:49:13 durufle NetworkManager: <info>  Trying to start the supplicant... 
Nov 18 06:49:13 durufle NetworkManager: <info>  Trying to start the system settings daemon... 
Nov 18 06:49:13 durufle NetworkManager: <WARN>  killswitch_getpower_reply(): Error getting killswitch power: hal-ipw-killswitch-linu
x returned 255. 
Nov 18 06:49:13 durufle NetworkManager: <info>  Waking up... 
Nov 18 06:49:13 durufle NetworkManager: <info>  eth0: driver is 'e1000'. 
Nov 18 06:49:13 durufle NetworkManager: <info>  Found new Ethernet device 'eth0'. 
Nov 18 06:49:13 durufle NetworkManager: <info>  (eth0): exported as /org/freedesktop/Hal/devices/net_00_16_d3_c6_ce_f1 
Nov 18 06:49:13 durufle NetworkManager: <info>  wlan0: driver is 'iwl3945'. 
Nov 18 06:49:13 durufle NetworkManager: <info>  wlan0: driver does not support SSID scans (scan_capa 0x00). 
Nov 18 06:49:13 durufle NetworkManager: <info>  Found new 802.11 WiFi device 'wlan0'. 
Nov 18 06:49:13 durufle NetworkManager: <info>  (wlan0): exported as /org/freedesktop/Hal/devices/net_00_1c_bf_2d_3a_9a_0 
Nov 18 06:49:17 durufle NetworkManager: <info>  (eth0): device state change: 1 -> 2 
Nov 18 06:49:17 durufle NetworkManager: <info>  (eth0): bringing up device. 
Nov 18 06:49:17 durufle NetworkManager: <info>  (eth0): preparing device. 
Nov 18 06:49:17 durufle NetworkManager: <info>  (eth0): deactivating device (reason: 2). 
Nov 18 06:49:17 durufle NetworkManager: <info>  (wlan0): device state change: 1 -> 2 
Nov 18 06:49:17 durufle NetworkManager: <info>  (wlan0): bringing up device. 
Nov 18 06:49:17 durufle NetworkManager: <info>  (wlan0): preparing device. 
Nov 18 06:49:17 durufle NetworkManager: <info>  (wlan0): deactivating device (reason: 2). 
Nov 18 06:49:17 durufle NetworkManager: supplicant_interface_acquire: assertion `mgr_state == NM_SUPPLICANT_MANAGER_STATE_IDLE' failed

While the system stays up, every two minutes these two lines recur in the sylog:
Nov 18 07:01:13 durufle NetworkManager: <info>  Trying to start the supplicant... 
Nov 18 07:01:13 durufle NetworkManager: <info>  Trying to start the system settings daemon...

I'm using the iwl3945 driver for an Intel PRO/Wireless 3945ABG card with
a recent kernel:
Linux version 2.6.24-21-generic (buildd palmer) (gcc version 4.2.3 (Ubuntu 4.2.3-2ubuntu7)) #1 SMP Tue Oct 21 23:43:45 UTC 2008

I'm guessing there may be some sort of configuration problem. If I
reinstall the old Debian wireless packages, then I would be able to see
networks in the scan, and I could manually enter a network I wanted to
connect to.

Any suggestions about what the problem may be?

Thanks,

Geoff Buchan