Firefox won't start from desktop

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http://forums.fedoraforum.org – This is a new install of fedora 11 with Neville NewGuy at the controls. I cannot start Firefox from the desktop. Nothing happens (at all, nada, nix, zilch). When I run Firefox in a TermSess as su i get the following warning: (firefox:3168): GnomeUI-WARNING **: While connecting to session manager: None of the authentication protocols specified are supported. and a GUI error box An error occurred while loading or saving configuration information for Firefox. Some of your configuration settings may not work properly. Followed by these details 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: 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.) But Firefox starts OK. I checked the URL specified and then made sure the nfslock service was started but I can't find a gconf service (should I have found it??). Any pointers would be greatly appreciated. (HowTos)