intrepid locks up randomly when unattended

[ldm]

Intrepid 2.6.27-9-generic
All the currently available releases have been installed.

Intrepid randomly locks up when left unattended (no keyboard or mouse input) preventing use of keyboard and mouse (sometimes it can set for hours and will not lockup, other times only a few minutes are necessary). This requires a forced reboot to regain control of system. I have tried turning off the screen saver and setting the power control settings to never. Neither of these helped with the problem. I will attach the xorg0.log. The problem is repeatable but I have not found the conditions that initiate it.
Note: I have setup two different drives with Intrepid one with the default xorg.conf setup and the other using the Nvidia restricted drives. Neither setup takes care of the lockup problem.

I will also attach the .xsessions-errors file.

/etc/gdm/Xsession: Beginning session setup...
Setting IM through im-switch for locale=en_US.
Start IM through /etc/X11/xinit/xinput.d/all_ALL linked to /etc/X11/xinit/xinput.d/default.
Window manager warning: Failed to read saved session file /home/ldm/.config/metacity/sessions/108dc97fc861aded68123013687465980800000059690005.ms: Failed to open file '/home/ldm/.config/metacity/sessions/108dc97fc861aded68123013687465980800000059690005.ms': No such file or directory
Initializing nautilus-share extension
seahorse nautilus module initialized

** (nautilus:6059): WARNING **: Unable to add monitor: Not supported
Nautilus-Share-Message: Called "net usershare info" but it failed: 'net usershare' returned error 255: net usershare: cannot open usershare directory /var/lib/samba/usershares. Error No such file or directory
Please ask your system administrator to enable user sharing.

E: thread-posix.c: Assertion 'pthread_setspecific(t->key, userdata) == 0' failed at pulsecore/thread-posix.c:194, function pa_tls_set(). Aborting.
x-session-manager[5969]: WARNING: Application 'libcanberra-login-sound.desktop' failed to register before timeout
Failure: Module initalization failed

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Initialising tracker...
starting HAL detection for ac adaptors...none found
Throttle level is 0
evolution-alarm-notify-Message: Setting timeout for 26311 1230163200 1230136889
evolution-alarm-notify-Message: Wed Dec 24 16:00:00 2008

evolution-alarm-notify-Message: Wed Dec 24 08:41:29 2008

QSettings: failed to open file '/etc/qt3/qt_plugins_3.3rc'
QSettings::sync: filename is null/empty
QSettings: failed to open file '/etc/qt3/qt_plugins_3.3rc'
QSettings::sync: filename is null/empty
X Error: BadValue (integer parameter out of range for operation) 2
  Major opcode: 25
  Minor opcode: 0
  Resource id: 0x0
ICEDTEAPLUGIN_DEBUG = (null)
Nautilus-Share-Message: Called "net usershare info" but it failed: 'net usershare' returned error 255: net usershare: cannot open usershare directory /var/lib/samba/usershares. Error No such file or directory
Please ask your system administrator to enable user sharing.

(npviewer.bin:6791): Gtk-CRITICAL **: gtk_style_detach: assertion `style->attach_count > 0' failed

(npviewer.bin:6791): Gtk-CRITICAL **: gtk_style_detach: assertion `style->attach_count > 0' failed

(npviewer.bin:6791): Gtk-CRITICAL **: gtk_widget_destroy: assertion `GTK_IS_WIDGET (widget)' failed

(npviewer.bin:6791): Gtk-CRITICAL **: gtk_widget_destroy: assertion `GTK_IS_WIDGET (widget)' failed
Nautilus-Share-Message: Called "net usershare info" but it failed: 'net usershare' returned error 255: net usershare: cannot open usershare directory /var/lib/samba/usershares. Error No such file or directory
Please ask your system administrator to enable user sharing.

Nautilus-Share-Message: Called "net usershare info" but it failed: 'net usershare' returned error 255: net usershare: cannot open usershare directory /var/lib/samba/usershares. Error No such file or directory
Please ask your system administrator to enable user sharing.

Nautilus-Share-Message: Called "net usershare info" but it failed: 'net usershare' returned error 255: net usershare: cannot open usershare directory /var/lib/samba/usershares. Error No such file or directory
Please ask your system administrator to enable user sharing.

Nautilus-Share-Message: Called "net usershare info" but it failed: 'net usershare' returned error 255: net usershare: cannot open usershare directory /var/lib/samba/usershares. Error No such file or directory
Please ask your system administrator to enable user sharing.

evolution-shell-Message: Killing old version of evolution-data-server...
** (evolution:11371): DEBUG: mailto URL command: evolution %s
** (evolution:11371): DEBUG: mailto URL program: evolution
evolution-mail-Message: Error occurred while existing dialogue active:
no such table: LDM/ubuntu/bug reports
evolution-mail-Message: Error occurred while existing dialogue active:
no such table: LDM/ubuntu/forums
Usage: apport-gtk [options]

apport-gtk: error: -c option requires an argument
Nautilus-Share-Message: Called "net usershare info" but it failed: 'net usershare' returned error 255: net usershare: cannot open usershare directory /var/lib/samba/usershares. Error No such file or directory
Please ask your system administrator to enable user sharing.

[Коренберг Марк (socketpair)]

disable screensaver (blck screen). If it helps, bug in 3D drivers. I have the same problem

[Jeremy Foshee (jeremyfoshee)]

Hi ldm,

This bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? Can you try with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/lucid.

If it remains an issue, could you run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux 311218

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

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[Daniel T Chen (crimsun)]

The following error is indicative of some application doing the wrong thing with respect to libxml2's xmlCleanupParser():

E: thread-posix.c: Assertion 'pthread_setspecific(t->key, userdata) == 0' failed at pulsecore/thread-posix.c:194, function pa_tls_set(). Aborting.

[Jeremy Foshee (jeremyfoshee)]

This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu release http://www.ubuntu.com/getubuntu/download . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

[This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]