[SOLVED] Окна "расползаются" при включённой прозрачности - fglrx.

Fglrx (ati-drivers-8.40.4) установлен в Xorg 7.2.
Всё работает нормально.
До включения прозрачности окон в XFCE.

После включения прозрачности, при прокрутке в окне (скроллинге), содержимое окна (если оно gtk) "расползается".
Так выглядит Firefox при включённой прозрачности:

И это ещё не самый худший пример!

При использовании опенсурсных xf86-video-ati-драйверов, подобных проблем не возникает.
Xorg.conf:

# File generated by xorgconfig.
Section "DRI"
    Mode 0666
    Group "video"
EndSection

Section "ServerLayout"
	Identifier     "Simple Layout"
	Screen      0  "Screen 1" 0 0
	InputDevice    "Mouse1" "CorePointer"
	InputDevice    "Keyboard1" "CoreKeyboard"
EndSection

Section "Files"
	FontPath     "/usr/share/fonts/misc/"
	FontPath     "/usr/share/fonts/Type1/"
	FontPath     "/usr/share/fonts/100dpi/"
	FontPath     "/usr/share/fonts/75dpi/"
EndSection

Section "Module"
    Load       "glx"
    Load       "dri"
	Load "drm"
	Load "vnc"
	Load  "dbe"  	# Double buffer extension
	SubSection "extmod"
		Option	    "omit xfree86-dga"   # don't initialise the DGA extension
	EndSubSection
	Load  "freetype"
EndSection

Section "InputDevice"
	Identifier  "Keyboard1"
	Driver      "kbd"
	Option	    "AutoRepeat" "500 30"
	Option	    "XkbRules" "xorg"
	Option	    "XkbModel" "pc105"
	Option	    "XkbLayout" "us,ru"
	Option	    "XkbVariant" ",winkeys"
Option "XkbOptions"  "grp:alt_shift_toggle"
EndSection

Section "InputDevice"
	Identifier  "Mouse1"
	Driver      "mouse"
	Option	    "Protocol" "IMPS/2"	# IntelliMouse PS/2
	Option	    "Device" "/dev/input/mice"
	Option	    "ZAxisMapping" "4 5 6 7"
	Option	    "Emulate3Buttons"
EndSection

Section "Monitor"
	Identifier   "Samsung Syncmaster 960bf"
	HorizSync    31.5 - 64.3
	VertRefresh  50.0 - 90.0
EndSection

Section "Monitor"
	Identifier   "aticonfig-Monitor[0]"
	Option	    "VendorName" "ATI Proprietary Driver"
	Option	    "ModelName" "Generic Autodetecting Monitor"
	Option	    "DPMS" "true"
EndSection
Section "Device"
	Identifier  "ATI Radeon"
	VendorName "ATI Technologies Inc"
	Driver      "fglrx"
	Option "XAANoOffscreenPixmaps" "true"
	Option "backingstore" "true"
    Option "UseInternalAGPGART"         "no"
#    Option "AGPMode" "4"
        Option          "ColorTiling"   "on"
 Option      "VideoOverlay" "on"
 Option      "UseFastTLS" "2"
Option "EnablePrivateBackZ" "on"
EndSection

Section "Screen"
	Identifier "Screen 1"
	Device     "ATI Radeon"
	Monitor    "Samsung Syncmaster 960bf"
	DefaultDepth     24
	SubSection "Display"
		Viewport   0 0
		Depth     8
		Modes    "1280x1024" "1024x768" "800x600" "640x480"
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     16
		Modes    "1280x1024" "1024x768" "800x600" "640x480"
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     24
		Modes    "1280x1024" "1024x768" "800x600" "640x480"
	EndSubSection
	Option  "SecurityTypes" "VncAuth"
  Option  "UserPasswdVerifier" "VncAuth"
    Option  "PasswordFile" "/etc/vncpasswd"
EndSection

Section "Extensions"
	Option "RENDER" "true"
	Option "Composite" "true"
Option "ReducedBlanking" "Enable"
EndSection

ATI Radeon 9600.
Просьба использование opensource драйверов не предлагать!