When I run quake4, I get the following error:

Code:
/usr/local/games/quake4/q4base
/usr/local/games/quake4/q4base/zpak_english_04.pk4 (3 files)
/usr/local/games/quake4/q4base/zpak_english_03.pk4 (4 files)
/usr/local/games/quake4/q4base/zpak_english_02.pk4 (21 files)
/usr/local/games/quake4/q4base/zpak_english_01.pk4 (1 files)
/usr/local/games/quake4/q4base/pak022.pk4 (14 files)
/usr/local/games/quake4/q4base/pak021.pk4 (89 files)
/usr/local/games/quake4/q4base/pak020.pk4 (11 files)
/usr/local/games/quake4/q4base/pak019.pk4 (1206 files)
/usr/local/games/quake4/q4base/pak018.pk4 (3 files)
/usr/local/games/quake4/q4base/pak017.pk4 (3 files)
/usr/local/games/quake4/q4base/pak016.pk4 (193 files)
/usr/local/games/quake4/q4base/pak015.pk4 (34 files)
/usr/local/games/quake4/q4base/pak014.pk4 (552 files)
/usr/local/games/quake4/q4base/pak013.pk4 (239 files)
/usr/local/games/quake4/q4base/game200.pk4 (9 files)
/usr/local/games/quake4/q4base/game100.pk4 (2 files)
/usr/local/games/quake4/q4base/game000.pk4 (2 files)
game DLL: 0x0 in pak: 0x0
Addon pk4s:
/usr/local/games/quake4/q4base/q4cmp_pak001.pk4 (119 files)
file system initialized.
---------------------------------------------
------------ Initializing Decls -------------
Loading guides.... 55 loaded
37ms to load 243k of material
1ms to load 4k of skin
39ms to load 378k of sound
0ms to load 0k of materialType
204ms to load 2889k of lipSync
0ms to load 0k of playback
6ms to load 25k of effect
---------------------------------------------
-------- Initializing renderSystem ----------
using ARB renderSystem
renderSystem initialized.
---------------------------------------------
Found default language English with VO
.... found additional language 'french' without VO
.... found additional language 'italian' without VO
.... found additional language 'spanish' without VO
696 strings read from strings/english_code.lang
1794 strings read from strings/english_guis.lang
1797 strings read from strings/english_mappack.lang
2273 strings read from strings/english_maps.lang
3 strings read from strings/french_mappack.lang
3 strings read from strings/italian_mappack.lang
3 strings read from strings/spanish_mappack.lang
Couldn't open journal files
execing default.cfg
couldn't exec editor.cfg
couldn't exec Quake4Config.cfg
couldn't exec autoexec.cfg
-------- Initializing Sound System ----------
sound system initialized.
---------------------------------------------
--------------- R_InitOpenGL ----------------
Initializing SDL subsystem
Initializing SDL subsystem
Fatal Error: Unable to initialize OpenGL
--------------- BSE Shutdown ----------------
---------------------------------------------
idRenderSystem::Shutdown()
Sys_Error: Unable to initialize OpenGL
xorg.conf:

Code:
Section "ServerLayout"
        Identifier     "aticonfig Layout"
        Screen      0  "aticonfig-Screen[0]-0" 0 0
EndSection

Section "Files"
EndSection

Section "Module"
        Load  "glx"
EndSection

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

Section "Device"
        Identifier  "aticonfig-Device[0]-0"
        Driver      "fglrx"
        Option      "UseFastTLS" "1"
        BusID       "PCI:2:0:0"
EndSection

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

Code:
display: :0  screen: 0
direct rendering: Yes
server glx vendor string: ATI
server glx version string: 1.4

OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: ATI Radeon HD 4800 Series 
OpenGL version string: 2.1.8870
OpenGL shading language version string: 1.40

I have installed the latest ATI drivers.
Can any one help?
Thanks