XFCE4 - compiz-fusion problem

[codenyx]

Hey dudes,

i have a Working compiz-fusion on gnome

glxinfo:

[...]
direct rendering: Yes
[...]

fglrxinfo

display: :0.0  screen: 0
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: ATI RADEON 9600 Series
OpenGL version string: 2.1.7873 Release

so it runs but if i want start xfce4 my xsession-erros give me this back:

Initialising new SSH agent...
succeeded
Identity added: /home/flo/.ssh/id_rsa (/home/flo/.ssh/id_rsa)
/usr/bin/startxfce4: X server already running on display :0
W: polkit.c: Failed to show grant dialog: Unable to lookup exe for caller
W: polkit.c: PolicyKit responded with 'auth_admin_keep_always'
N: main.c: Called SUID root and real-time/high-priority scheduling was requested in the configuration. However, we lack the necessary priviliges:
N: main.c: We are not in group 'pulse-rt' and PolicyKit refuse to grant us priviliges. Dropping SUID again.
N: main.c: For enabling real-time scheduling please acquire the appropriate PolicyKit priviliges, or become a member of 'pulse-rt', or increase the RLIMIT_NICE/RLIMIT_RTPRIO resource limits for this user.
** Message: Querying XINPUT extension
** Message: XINPUT extension found
** Message: Querying Xkb extension
** Message: Xkb extension found
** Message: This build doesn't include support for XF86Misc extension
** Message: Querying Xkb extension
** Message: Xkb extension found

(xfdesktop:15829): Gtk-WARNING **: Theme directory 48x48/mimetypes of theme Snow-Apple has no size field


** (xfdesktop:15829): CRITICAL **: settings_register_callback: assertion `cb && user_data && mcs_client' failed

** (xfdesktop:15829): CRITICAL **: settings_register_callback: assertion `cb && user_data && mcs_client' failed

(xfce4-panel:15836): Gtk-WARNING **: Theme directory 48x48/mimetypes of theme Snow-Apple has no size field

evolution-alarm-notify-Message: Setting timeout for 18115 1221782400 1221764285
evolution-alarm-notify-Message:  Fri Sep 19 02:00:00 2008

evolution-alarm-notify-Message:  Thu Sep 18 20:58:05 2008


(xfce4-menu-plugin:15841): Gtk-WARNING **: Theme directory 48x48/mimetypes of theme Snow-Apple has no size field

Failure: Module initalization failed

** (nm-applet:15874): WARNING **: nm_object_get_property: Error getting 'WirelessHardwareEnabled' for /org/freedesktop/NetworkManager: The name org.freedesktop.NetworkManager was not provided by any .service files


(nm-applet:15874): Gtk-WARNING **: Theme directory 48x48/mimetypes of theme Snow-Apple has no size field

Error: Screen isn't composited. Please run compiz (-fusion) or another compositing manager.

** (nm-applet:15874): WARNING **: nm_object_get_property: Error getting 'ActiveConnections' for /org/freedesktop/NetworkManager: The name org.freedesktop.NetworkManager was not provided by any .service files

Screen is composited.
xfce-mcs-manager: Fatal IO error 11 (Die Ressource ist zur Zeit nicht verfügbar) on X server :0.0.
XIO:  fatal IO error 104 (Connection reset by peer) on X server ":0.0"
xfce4-session: Fatal IO error 104 (Die Verbindung wurde vom Kommunikationspartner zurückgesetzt) on X server :0.0.
      after 95 requests (92 known processed) with 0 events remaining.

(xfce4-panel:15836): libxfcegui4-WARNING **: ICE I/O Error

(xfce4-panel:15836): libxfcegui4-WARNING **: Disconnected from session manager.
xfdesktop: Fatal IO error 11 (Die Ressource ist zur Zeit nicht verfügbar) on X server :0.0.
could not attach to desktop process
xfce4-panel: Fatal IO error 104 (Die Verbindung wurde vom Kommunikationspartner zurückgesetzt) on X server :0.0.
gnome-session-save: Fatal IO error 104 (Die Verbindung wurde vom Kommunikationspartner zurückgesetzt) on X server :0.0.

So the Start-Screen is hang up so i must go to [alt] + [ctrl] + [backspace]

I have fc8

Please help me