[et-mgmt-tools] What causes virt-manager to connect in read only mode?

[Joseph S]

Virt manager 0.7.0 on Centos (libvirt 0.3.3) does this:

[Sun, 12 Apr 2009 20:57:00 virt-manager 5830] INFO (virt-manager:144)
Application startup
[Sun, 12 Apr 2009 20:57:01 virt-manager 5833] DEBUG (engine:81) About to 
connect to uris ['qemu:///system']
[Sun, 12 Apr 2009 20:57:01 virt-manager 5833] DEBUG (connection:144) 
Bonding masters are: []
[Sun, 12 Apr 2009 20:57:01 virt-manager 5833] DEBUG (connection:170) Got 
physical net device /org/freedesktop/Hal/devices/net_00_30_48_c6_55_e0
[Sun, 12 Apr 2009 20:57:01 virt-manager 5833] DEBUG (connection:230) 
Adding net device eth0 00:30:48:c6:55:e0 /sys/class/net/eth0 (bridge: br0)
[Sun, 12 Apr 2009 20:57:01 virt-manager 5833] DEBUG (connection:202) 
Checking for VLANs on /sys/class/net/eth0
[Sun, 12 Apr 2009 20:57:01 virt-manager 5833] DEBUG (connection:170) Got 
physical net device /org/freedesktop/Hal/devices/net_00_30_48_c6_55_e1
[Sun, 12 Apr 2009 20:57:01 virt-manager 5833] DEBUG (connection:230) 
Adding net device eth1 00:30:48:c6:55:e1 /sys/class/net/eth1 (bridge: br1)
[Sun, 12 Apr 2009 20:57:01 virt-manager 5833] DEBUG (connection:202) 
Checking for VLANs on /sys/class/net/eth1
[Sun, 12 Apr 2009 20:57:02 virt-manager 5833] DEBUG (engine:320) window 
counter incremented to 1
[Sun, 12 Apr 2009 20:57:07 virt-manager 5833] DEBUG (connection:431) 
Scheduling background open thread for qemu:///system
[Sun, 12 Apr 2009 20:57:07 virt-manager 5833] DEBUG (connection:561) 
Background thread is running
[Sun, 12 Apr 2009 20:57:07 virt-manager 5833] ERROR (connection:551) 
Read/write connection failed for qemu:///system, falling back on 
read-only.
Traceback (most recent call last):
   File "/usr/local/share/virt-manager/virtManager/connection.py", line 
536, in _try_open
     self.vmm = libvirt.openAuth(self.uri,
AttributeError: 'module' object has no attribute 'openAuth'
[Sun, 12 Apr 2009 20:57:07 virt-manager 5833] DEBUG (connection:599) 
Background open thread complete, scheduling notify
[Sun, 12 Apr 2009 20:57:08 virt-manager 5833] DEBUG (connection:608) 
Notifying open result
[Sun, 12 Apr 2009 20:57:11 virt-manager 5833] DEBUG (engine:324) window 
counter decremented to 0
[Sun, 12 Apr 2009 20:57:11 virt-manager 5833] DEBUG (engine:332) Exiting 
app normally.