The problem I'm having is that after logging into GNOME Shell 3.4.1 on Ubuntu 12.04.1 LTS.

After a short period of time (approx 0-2 minutes) gnome shell becomes unresponsive.

Hovering on the corner / clicking on activities button doesn't do anything,

Windows get stuck (the application is responding but the gnome is not)

Also the Alt + F2 doesn't do anything.

The only way I know how to resolve this issue is to go to linux shell by pressing

Ctrl + Alt + any from F1 to F6, login and restart the lightdm service.

sudo service lightdm restart 

So the question is How to solve the Gnome 3 hang after logon problem?

hertz@hertzbox:~$ uname -a

Linux hertzbox 3.2.0-35-generic #55-Ubuntu SMP Wed Dec 5 17:42:16 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux



hertz@hertzbox:~$ lsb_release -a

No LSB modules are available.

Distributor ID: Ubuntu

Description:    Ubuntu 12.04.1 LTS

Release:    12.04

Codename:   precise



hertz@hertzbox:~$ gnome-shell --version

GNOME Shell 3.4.1

P.S. It's the same with or without extensions loaded

EDIT 1

.xsession-errors

(gnome-settings-daemon:1365): GLib-CRITICAL **: g_variant_new_string: assertion `string != NULL' failed



(gnome-settings-daemon:1365): GLib-GIO-CRITICAL **: g_settings_schema_key_type_check: assertion `value != NULL' failed



(gnome-settings-daemon:1365): GLib-CRITICAL **: g_variant_get_type_string: assertion `value != NULL' failed



(gnome-settings-daemon:1365): GLib-GIO-CRITICAL **: g_settings_set_value: key 'picture-uri' in 'org.gnome.desktop.background' expects type 's', but a GVariant of type '(null)' was given

** Message: applet now removed from the notification area



** (nautilus:1585): WARNING **: Can not get _NET_WORKAREA



** (nautilus:1585): WARNING **: Can not determine workarea, guessing at layout

** Message: Stopping registered applet secret agent because GNOME Shell is running

** Message: using fallback from indicator to GtkStatusIcon



(gnome-shell:1546): folks-WARNING **: Failed to find primary PersonaStore with type ID 'eds' and ID 'system'.

Individuals will not be linked properly and creating new links between Personas will not work.

The configured primary PersonaStore's backend may not be installed. If you are unsure, check with your distribution.

** Message: applet now embedded in the notification area

Window manager warning: CurrentTime used to choose focus window; focus window may not be correct.

Window manager warning: Got a request to focus 0x1000004 (Desktop) with a timestamp of 0.  This shouldn't happen!

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.





** (zeitgeist-datahub:1867): WARNING **: recent-manager-provider.vala:133: Desktop file for "file:///home/hertz/projects/chrome-steamgifts-notifier/js/options/options.js" was not found, exec: sublime_text, mime_type: application/javascript



** (zeitgeist-datahub:1867): WARNING **: recent-manager-provider.vala:133: Desktop file for "file:///home/hertz/Sublime%20Text%202/Icon/256x256/sublime_text.png" was not found, exec: gnome-desktop-item-edit, mime_type: image/png



** (zeitgeist-datahub:1867): WARNING **: recent-manager-provider.vala:133: Desktop file for "file:///home/hertz/Sublime%20Text%202/sublime_text" was not found, exec: gnome-desktop-item-edit, mime_type: application/octet-stream



** (zeitgeist-datahub:1867): WARNING **: recent-manager-provider.vala:133: Desktop file for "file:///home/hertz/Desktop/christmasTree/tree.py" was not found, exec: python, mime_type: text/x-python



** (zeitgeist-datahub:1867): WARNING **: recent-manager-provider.vala:133: Desktop file for "file:///home/hertz/projects/chrome-steamgifts-notifier/js/test.js" was not found, exec: sublime_text, mime_type: application/javascript



** (nautilus:1585): WARNING **: Error calling current_status: Method "current_status" with signature "" on interface "com.ubuntuone.SyncDaemon.Status" doesn't exist





** (nautilus:1585): CRITICAL **: syncdaemon_status_info_get_online: assertion `SYNCDAEMON_IS_STATUS_INFO (sinfo)' failed

Window manager warning: CurrentTime used to choose focus window; focus window may not be correct.

Window manager warning: Got a request to focus 0x1a00003 (Unlock Log) with a timestamp of 0.  This shouldn't happen!

** Message: applet now removed from the notification area



(gnome-settings-daemon:1365): Gdk-WARNING **: gnome-settings-daemon: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.



Gkr-Message: secret service disappeared while waiting for prompt



(nm-applet:1582): Gdk-WARNING **: nm-applet: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.



[1586:1617:0105/225607:ERROR:native_backend_gnome_x.cc(664)] Keyring find failed: Error communicating with gnome-keyring-daemon



(nautilus:1585): Gdk-WARNING **: nautilus: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.





(gnome-shell-calendar-server:1675): Gdk-WARNING **: gnome-shell-calendar-server: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.



[1586:1586:0105/225607:ERROR:chrome_browser_main_x11.cc(62)] X IO Error detected



(gdu-notification-daemon:1856): Gdk-WARNING **: gdu-notification-daemon: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.





(evolution-alarm-notify:1895): Gdk-WARNING **: evolution-alarm-notify: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.





(update-notifier:1946): Gdk-WARNING **: update-notifier: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.





(deja-dup-monitor:1960): GVFS-RemoteVolumeMonitor-WARNING **: Owner :1.34 of volume monitor org.gtk.Private.GduVolumeMonitor disconnected from the bus; removing drives/volumes/mounts



(deja-dup-monitor:1960): GVFS-RemoteVolumeMonitor-WARNING **: Owner :1.35 of volume monitor org.gtk.Private.GPhoto2VolumeMonitor disconnected from the bus; removing drives/volumes/mounts



(deja-dup-monitor:1960): GVFS-RemoteVolumeMonitor-WARNING **: Owner :1.36 of volume monitor org.gtk.Private.AfcVolumeMonitor disconnected from the bus; removing drives/volumes/mounts



** (zeitgeist-datahub:1867): WARNING **: zeitgeist-datahub.vala:227: Unable to get name "org.gnome.zeitgeist.datahub" on the bus!

Thanks in advance.