ATI Radeon LW RV200 Mobility 7500 M7 locks up on X exit

[Warren Block]

Updated the T42 tonight, which has the same video.  -STABLE as of today, 
all ports updated as of today, and it seems fine.  At least no lock up 
on restarting X or shutting down.  Your xorg.conf had some interesting 
things, including XAA acceleration, which I didn't notice before. 
Here's the one from this machine, comments stripped.  Composite enabled 
does not provide composite, but otherwise no problems noticed:

Section "ServerLayout"
 	Identifier   "Manually Configured"
 	Screen       0  "Screen0" 0 0
 	Option       "DontZap" "Off"
EndSection

Section "Files"
 	ModulePath   "/usr/local/lib/xorg/modules"
 	FontPath     "/usr/local/lib/X11/fonts/misc/"
 	FontPath     "/usr/local/lib/X11/fonts/TTF/"
 	FontPath     "/usr/local/lib/X11/fonts/OTF"
 	FontPath     "/usr/local/lib/X11/fonts/Type1/"
 	FontPath     "/usr/local/lib/X11/fonts/100dpi/"
 	FontPath     "/usr/local/lib/X11/fonts/75dpi/"
 	FontPath     "/usr/local/lib/X11/fonts/bitstream-vera/"
EndSection

Section "DRI"
 	Group 0
 	Mode  0660
EndSection

Section "Extensions"
 	Option       "Composite" "Enable"
EndSection

Section "Device"
 	Identifier  "Card0"
 	Driver      "radeon"
 	VendorName  "ATI Technologies Inc"
 	BoardName   "Radeon Mobility M7 LW [Radeon Mobility 7500]"
 	BusID       "PCI:1:0:0"
 	Option      "AccelMethod" "EXA"
 	Option      "EXAVSync" "On"
EndSection

Section "Screen"
 	Identifier "Screen0"
 	Device     "Card0"
 	Monitor    "Monitor0"
 	SubSection "Display"
 		Virtual 1024 768
 		Modes "1024x768"
 	EndSubSection
EndSection