Interestingly, this card seems pretty stable with 3D. I can play a game for a couple hours an not have any problem. But other times the box will just freeze up when I'm doing something simple like moving/resizing a window or scrolling. It locks the machine up pretty hard -- I can't restart X or switch terminals. Oddly, I can ping the box, but I can't ssh into it. All I can do is reboot.

Code:
# Xorg configuration created by system-config-display

Section "ServerLayout"
        Identifier     "single head configuration"
        Screen      0  "aticonfig-Screen[0]" 0 0
        InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
EndSection

Section "Module"
        Load "dbe"
        Load "extmod"
        #SubSection "extmod"
        #Option "omit XVideo"
        #Option "omit XVideo-MotionCompensation"
        #Option "omit XFree86-VidModeExtension"
        #EndSubSection
        Load "fbdevhw"
        Load "glx"
        Load "record"
        Load "freetype"
        Load "type1"
        Load "dri"
EndSection

Section "ServerFlags"
        Option "AIGLX" "off"
EndSection

Section "Extensions"
        Option  "Composite" "Disable"
EndSection

Section "InputDevice"
        Identifier  "Mouse0"
        Driver      "mouse"
        Option      "Name" "Razer Copperhead"
        Option      "Vendor" "Razer"
        Option      "CorePointer"
        Option      "Protocol" "ExplorerPS/2"
        Option      "ZAxisMapping" "4 5"
        Option      "Device" "/dev/input/mice"
        Option      "Buttons" "7"
        Option      "ButtonMapping" "1 2 3 6 7"
        Option      "Resolution" "800" #other valid values: 400, 800, 1800
        Option      "SampleRate" "1000Hz" #other valid values: 125, 500
        Option      "Emulate3Buttons" "false"
EndSection


Section "InputDevice"
        Identifier  "Keyboard0"
        Driver      "kbd"
        Option      "XkbModel" "pc105"
        Option      "XkbLayout" "us"
EndSection

Section "Monitor"
        Identifier   "aticonfig-Monitor[0]"
        Option      "VendorName" "ATI Proprietary Driver"
        Option      "ModelName" "Generic Autodetecting Monitor"
        Option      "DPMS" "true"
EndSection


Section "Device"
        Identifier  "aticonfig-Device[0]"
        Driver      "fglrx"
EndSection


Section "Screen"
        Identifier "aticonfig-Screen[0]"
        Device     "aticonfig-Device[0]"
        Monitor    "aticonfig-Monitor[0]"
        DefaultDepth     24
        SubSection "Display"
                Viewport   0 0
                Depth     24
        EndSubSection
EndSection