Xsession errors, gnome shell crash

/etc/gdm/Xsession: Beginning session setup...
localuser:jan being added to access control list
/etc/gdm/Xsession: Setup done, will execute: /usr/bin/ssh-agent -- gnome-session
GNOME_KEYRING_CONTROL=/run/user/1000/keyring-ZD4ygE
GNOME_KEYRING_CONTROL=/run/user/1000/keyring-ZD4ygE
SSH_AUTH_SOCK=/run/user/1000/keyring-ZD4ygE/ssh
GNOME_KEYRING_CONTROL=/run/user/1000/keyring-ZD4ygE
SSH_AUTH_SOCK=/run/user/1000/keyring-ZD4ygE/ssh
GNOME_KEYRING_CONTROL=/run/user/1000/keyring-ZD4ygE
SSH_AUTH_SOCK=/run/user/1000/keyring-ZD4ygE/ssh
GPG_AGENT_INFO=/run/user/1000/keyring-ZD4ygE/gpg:0:1
gnome-session[4351]: WARNING: Application 'gnome-settings-daemon.desktop' failed to register before timeout

(gnome-panel:4407): Gtk-CRITICAL **: gtk_accelerator_parse_with_keycode: assertion `accelerator != NULL' failed

** (gnome-panel:4407): WARNING **: Unable to parse mouse modifier '(null)'

** Message: applet now removed from the notification area
** Message: applet now embedded in the notification area

(nm-applet:4419): Gtk-WARNING **: gtk_widget_size_allocate(): attempt to allocate widget with width -8 and height 27

(gnote:4424): Gtk-WARNING **: gtk_widget_size_allocate(): attempt to allocate widget with width -23 and height 27

(gnome-settings-daemon:4380): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed

(gnome-settings-daemon:4380): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed
[1349888819,000,xklavier.c:xkl_engine_start_listen/] 	The backend does not require manual layout management - but it is provided by the application
** Message: applet now removed from the notification area

(polkit-gnome-authentication-agent-1:4418): Gdk-WARNING **: polkit-gnome-authentication-agent-1: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.


(gnome-fallback-mount-helper:4420): Gdk-WARNING **: gnome-fallback-mount-helper: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.


(gnome-screensaver:4421): Gdk-WARNING **: gnome-screensaver: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.


(notification-daemon:4423): Gdk-WARNING **: notification-daemon: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.


(gnome-sound-applet:4427): Gdk-WARNING **: gnome-sound-applet: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.

dropbox: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.

(gnote:4424): Gdk-WARNING **: gnote: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.


(nm-applet:4419): Gdk-WARNING **: nm-applet: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.