[libvirt-users] Error starting Virtual Machine Manager: Failed to contact configuration server...

Hi all! Do you have any idea about the following error message from virt-manager. I was trying to start it with "sudo virt-manager". Do you think I can fix this by simply restarting libvirtd? Regards, Allen Error starting Virtual Machine Manager: Failed to contact configuration server; some possible causes are that you need to enable TCP/IP networking for ORBit, or you have stale NFS locks due to a system crash. See http://projects.gnome.org/gconf/ for information. (Details - 1: Could not send message to GConf daemon: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.) Traceback (most recent call last): File "/usr/share/virt-manager/virt-manager.py", line 383, in <module> main() File "/usr/share/virt-manager/virt-manager.py", line 315, in main config = virtManager.config.vmmConfig(appname, appversion, glade_dir) File "/usr/share/virt-manager/virtManager/config.py", line 98, in __init__ self.conf.add_dir(self.conf_dir, gconf.CLIENT_PRELOAD_NONE) GError: Failed to contact configuration server; some possible causes are that you need to enable TCP/IP networking for ORBit, or you have stale NFS locks due to a system crash. See http://projects.gnome.org/gconf/ for information. (Details - 1: Could not send message to GConf daemon: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.) 2014-10-27 Allen Qiu