Bug#510775: [510775] same invisible panel problem observed

[Scott Oom]

I have observed the same issue, but I do not think it is a gnome-panel 
problem.  It looks more like a problem with metacity's compositing or 
layers.  The panel disappeared on me during normal use, not with gxine, 
but I couldn't figure out how to get it back until I found this bug.  
Toggling fullscreen in gxine indeed did fix the problem, for the time 
being.

After I found this bug, though, I tried to use vlc to toggle fullscreen 
before gxine, as I did not have gxine installed.  This did not fix the 
problem, but fullscreen in vlc was not working either.  In fullscreen 
mode, I didn't see the video anymore, but the system was behaving as if 
it was.  I could see the open applications on the desktop, but all 
clicks went unanswered until I hit 'f' again to go out of fullscreen 
mode.  After using gxine to to fix the gnome-panel, vlc's fullscreen 
works as usual again.  I am guessing the vlc fullscreen and the gnome 
panel are on the same layer or use the same WM hints so they behaved the 
same.

Included metacity package information since I believe that is where the 
real issue might be.

Package: metacity
Version: 1:2.24.0-2
Severity: wishlist

-- System Information:
Debian Release: squeeze/sid
  APT prefers unstable
  APT policy: (800, 'unstable'), (750, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.29-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages metacity depends on:
ii  libatk1.0-0                  1.24.0-2    The ATK accessibility 
toolkit
ii  libc6                        2.9-7       GNU C Library: Shared 
libraries
ii  libcairo2                    1.8.6-2+b1  The Cairo 2D vector 
graphics libra
ii  libgconf2-4                  2.26.0-1    GNOME configuration 
database syste
ii  libglib2.0-0                 2.20.1-1    The GLib library of C 
routines
ii  libgtk2.0-0                  2.16.1-2    The GTK+ graphical user 
interface 
ii  libice6                      2:1.0.5-1   X11 Inter-Client Exchange 
library
ii  libmetacity-private0         1:2.24.0-2  library of lightweight GTK2 
based 
ii  libpango1.0-0                1.24.0-3+b1 Layout and rendering of 
internatio
ii  libsm6                       2:1.1.0-2   X11 Session Management 
library
ii  libstartup-notification0     0.10-1      library for program launch 
feedbac
ii  libx11-6                     2:1.2.1-1   X11 client-side library
ii  libxcomposite1               1:0.4.0-3   X11 Composite extension 
library
ii  libxcursor1                  1:1.1.9-1   X cursor management library
ii  libxdamage1                  1:1.1.1-4   X11 damaged region 
extension libra
ii  libxext6                     2:1.0.4-1   X11 miscellaneous extension 
librar
ii  libxfixes3                   1:4.0.3-2   X11 miscellaneous 'fixes' 
extensio
ii  libxinerama1                 2:1.0.3-2   X11 Xinerama extension 
library
ii  libxrandr2                   2:1.3.0-2   X11 RandR extension library
ii  libxrender1                  1:0.9.4-2   X Rendering Extension 
client libra
ii  metacity-common              1:2.24.0-2  Shared files of lightweight 
GTK2 b

Versions of packages metacity recommends:
ii  gnome-session [x-session-mana 2.22.3-3   The GNOME 2 Session Manager

Versions of packages metacity suggests:
ii  gnome-control-center        1:2.24.0.1-4 utilities to configure the 
GNOME d