Gele de firefox

bonjour

voila j'utilise nvidia-glx-new j'ai une carte 8800gt, j'avais quelques soucis graphique genre des trainées de fenêtre qui se multiplies quand je les deplacaient, pareil pour le curseur de souris (je suis sous kde) donc j'ai installé compiz-fusion et apparament ça va mieux. Sauf que maintenant j'ai firefox qui gele ça dur 30s à peu près la fenêtre devient grise puis ça se remet tout seul en general mais c'est systematique, donc avant de perdre patience j'espère trouver une solution ici.

voila mon /etc/X11/xorg.conf
Code:

# xorg.conf (X.Org X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the xorg.conf manual page.
# (Type "man xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command:
# sudo dpkg-reconfigure -phigh xserver-xorg

Section "InputDevice"
Identifier "Generic Keyboard"
Driver "kbd"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "fr"
Option "XkbVariant" "oss"
EndSection

Section "InputDevice"
Identifier "Configured Mouse"
Driver "mouse"
Option "CorePointer"
EndSection

Section "Device"
Identifier "Configured Video Device"
Driver "nvidia"
Option "NoLogo" "True"
EndSection

Section "Monitor"
Identifier "Configured Monitor"
EndSection

Section "Screen"
Identifier "Default Screen"
Monitor "Configured Monitor"
Device "Configured Video Device"
Defaultdepth 24
EndSection

Section "ServerLayout"
Identifier "Default Layout"
screen "Default Screen"
EndSection
Section "Module"
Load "glx"

merci d'avance de vos reponses