This bug was fixed in the package xorg-server - 2:1.8.99.905-1ubuntu1

---------------
xorg-server (2:1.8.99.905-1ubuntu1) maverick; urgency=low

  * Merge from (unreleased) Debian experimental.  Remaining Ubuntu changes:
    - rules, control:
      + Disable SELinux, libaudit-dev is not in main yet (LP 406226).
        Drop libaudit-dev from build-deps.
    - rules: Enable xcsecurity (LP 247537).
    - local/xvfb-run*: Add correct docs about error codes (LP 328205)
    - rules: Add --with-extra-module-dir to support GL alternatives.
    - control: Xvfb depends on xauth, x11-xkb-utils. (LP 500102)
    - rules, local/64-xorg-xkb.rules: Don't use keyboard-configuration
      until it's available.
    - control: Update some versioned Breaks for Ubuntu versions.
    - debian/patches:
      + 100_rethrow_signals.patch:
        When aborting, re-raise signals for apport
      + 109_fix-swcursor-crash.patch:
        Avoid dereferencing null pointer while reloading cursors during
        resume. (LP 371405)
      + 111_armel-drv-fallbacks.patch:
        Add support for armel driver fallbacks.
      + 121_only_switch_vt_when_active.diff:
        Add a check to prevent the X server from changing the VT when killing
        GDM from the console.
      + 122_xext_fix_card32_overflow_in_xauth.patch:
        Fix server crash when “xauth generate” is called with large timeout.
      + 157_check_null_modes.patch, 162_null_crtc_in_rotation.patch,
        166_nullptr_xinerama_keyrepeat.patch, 167_nullptr_xisbread.patch
        169_mipointer_nullptr_checks.patch,
        172_cwgetbackingpicture_nullptr_check.patch:
        Fix various segfaults in xserver by checking pointers for NULL
        values before dereferencing them.
      + 165_man_xorg_conf_no_device_ident.patch
        Correct man page
      + 168_glibc_trace_to_stderr.patch:
        Report abort traces to stderr instead of terminal
      + 184_virtual_devices_autodetect.patch:
        Use vesa for qemu device, which is not supported by cirrus
      + 187_edid_quirk_hp_nc8430.patch:
        Quirk for another LPL monitor (LP 380009)
      + 188_default_primary_to_first_busid.patch:
        Pick the first device and carry on (LP 459512)
      + 189_xserver_1.5.0_bg_none_root.patch:
        Create a root window with no background.
      + 190_cache-xkbcomp_output_for_fast_start_up.patch:
        Cache keyboard settings.
      + 191-Xorg-add-an-extra-module-path.patch:
        Add support for the alternatives module path.
      + 197_xvfb-randr.patch:
        Adds xrandr support to xvfb. (LP 516123)
      + 198_nohwaccess.patch:
        Adds a -nohwaccess argument to make X not access the hardware
        ports directly.
      + 200_randr-null.patch:
        Clarify a pointer initialization.
  * Update changelog entries for 1.8.1.902-1 which became 1.8.99.904-1
  * Drop 196_xvfbscreeninit-handling.patch: it's semantically empty, and now
    doesn't apply.  Merge remaining #include change into 197_xvfb-randr.patch
  * New upstream version will start correctly when no outputs are connected,
    as long as the video driver can dynamically resize the framebuffer
    (true for all KMS drivers) (LP: #337889)
  * New upstream version fixes crash on non-admin logout with KDE (LP: #569879)
  * Refresh 111_armel-drv-fallbacks.patch to fix the build on armel
 -- Christopher James Halse Rogers <email address hidden>   Thu, 05 Aug 2010 11:25:14 +1000