My GNOME2 cannot work!!!

hi,
I just tried to reinstall my freebsd.
then I installed these packages:
xorg
gnome2-lite

and when I type in startx,it still give me a ERROR!!!!
It tell me this:
Could not lock the file "/var/tmp/gconf-test-locking-file-CB9IKU"
The error was "Invalid argument"(errno = 22)

the console says:
gconf-sanity-check-2 did not pass,logging back out

then I add
gnome_enable="YES"
to /etc/rc.conf and reboot.

While I am booting,it tell me these:
Starting avahi-daemon
avahi-daemon[609]:Failed to create PID file:Invalid Argument
Starting avahi-dnsconfd
avahi-daemon[1021]:Failed to create PID file:Invalid Argument

What shall I do???

--------------
Bear
2008-11-16