I've installed CentOS 6.2 as a VMware guest. It was a minimal install + X Window System. Then I installed firefox.i686 3.6.24-3.el6.centos using yum install as root. When I launch the firefox as root, I got error message: GConf Error: 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: Failed to get connection to session: /bin/dbus-launch terminated abnormally without any error message) This message repeats three times. However, the firefox is open and everything is still working. I'm just wondering what caused the message and how to solve it. Thanks in advance!