[wplug] Lost my X

[Brandon Kuczenski]

System is Debian Sarge and Gnome 2.6.

Somehow -- I really don't have any idea what it could have been -- my 
laptop X server stopped permitting me to launch applications.  I don't 
really know how to debug this because I can't open a web browser to search 
for help.  X is still running, and Gnome, and the gnome-panel and so on. 
But I cannot start any new applications that depend on X.

The only comments I get in /var/log/XFree86.0.log look like:
AUDIT: Wed Feb 16 18:57:02 2005: 4253 X: client 8 rejected from local host

If I try to run an application from the command line, I get:
$ firefox
Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified


(firefox-bin:4559): Gtk-WARNING **: cannot open display:
$

Running 'xhost +' gives the same error:
Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified

xhost:  unable to open display ":0.0"

Ctrl-Alt-Backspace spits me back to gdm.  If I login again, the problem 
persists.

All I did to my system today had to do with network configuration: I 
updated dhcp, ran dhcpd and IP masquerade.  Then I shut all that down and 
removed IP masquerade.  My iptables listing is now empty.

Running 'find /etc -mmin -360' produces nothing of interest (the problem 
started less than 6 hours ago).

~/.xsession-errors looks like:
/etc/gdm/PreSession/Default: Registering your session with wtmp and utmp
/etc/gdm/PreSession/Default: running: /usr/bin/X11/sessreg -a -w 
/var/log/wtmp -u /var/run/utmp -x "/var/lib/gdm/:0.Xservers" -h "" -l ":0" 
"root"
/etc/gdm/Xsession: Beginning session setup...
SESSION_MANAGER=local/deepblue:/tmp/.ICE-unix/2834

** (nautilus:2941): WARNING **: destroyed file still being monitored

** (nautilus:2941): WARNING **: destroyed file still being monitored

** (nautilus:2941): WARNING **: destroyed file still being monitored

** (nautilus:2941): WARNING **: destroyed file still being monitored

I rmmod'ed all the iptabls stuff, to no avail.

I'm pretty much totally confused.

Any ideas at all?

-Brandon