Libre Office freezes in Unity

when libre office freezes in unity task bar I execute "unity --replace" in a terminal.
results in:
aart@Haarlem:~$ unity --replace
Checking if settings need to be migrated ...no
Checking if internal files need to be migrated ...no
Backend : gconf
Integration : true
Profile : unity
Adding plugins
Initializing core options...done
compiz (core) - Warn: failed to receive ConfigureNotify event on 0x1600004

compiz (core) - Warn: failed to receive ConfigureNotify event on 0x3200169

compiz (core) - Warn: failed to receive ConfigureNotify event on 0x3e00020

compiz (core) - Warn: failed to receive ConfigureNotify event on 0x44000b6

compiz (core) - Warn: failed to receive ConfigureNotify event on 0x45c709e

compiz (core) - Warn: failed to receive ConfigureNotify event on 0x1611b0e

compiz (core) - Warn: failed to receive ConfigureNotify event on 0x5800064

compiz (core) - Warn: failed to receive ConfigureNotify event on 0x161440a

compiz (core) - Warn: failed to receive ConfigureNotify event on 0x3800085

compiz (core) - Warn: failed to receive ConfigureNotify event on 0x581b8b7

compiz (core) - Warn: failed to receive ConfigureNotify event on 0x3a000a1

Initializing composite options...done
Initializing opengl options...done
Initializing decor options...done
Initializing vpswitch options...done
Initializing snap options...done
Initializing mousepoll options...done
Initializing resize options...done
Initializing place options...done
Initializing move options...done
Initializing wall options...done
Initializing grid options...done
Initializing session options...done
Initializing gnomecompat options...done
Initializing animation options...done
Initializing fade options...done
Initializing unitymtgrabhandles options...done
Initializing workarounds options...done
Initializing scale options...done
compiz (expo) - Warn: failed to bind image to texture
Initializing expo options...done
Initializing ezoom options...done

(compiz:28239): GConf-CRITICAL **: gconf_client_add_dir: assertion `gconf_valid_key (dirname, NULL)' failed
Initializing unityshell options...done
compiz (core) - Warn: unhandled ConfigureNotify on 0x1c0009e!
compiz (core) - Warn: this should never happen. you should probably file a bug about this.
compiz (core) - Warn: unhandled ConfigureNotify on 0x1c000a1!
compiz (core) - Warn: this should never happen. you should probably file a bug about this.
compiz (core) - Warn: unhandled ConfigureNotify on 0x1c000a1!
compiz (core) - Warn: this should never happen. you should probably file a bug about this.
compiz (core) - Warn: unhandled ConfigureNotify on 0x1c000a4!
compiz (core) - Warn: this should never happen. you should probably file a bug about this.
compiz (core) - Warn: unhandled ConfigureNotify on 0x1c000a7!
compiz (core) - Warn: this should never happen. you should probably file a bug about this.
compiz (core) - Warn: unhandled ConfigureNotify on 0x1c000a7!
compiz (core) - Warn: this should never happen. you should probably file a bug about this.
compiz (core) - Warn: unhandled ConfigureNotify on 0x1c000aa!
compiz (core) - Warn: this should never happen. you should probably file a bug about this.
compiz (core) - Warn: unhandled ConfigureNotify on 0x1c000aa!
compiz (core) - Warn: this should never happen. you should probably file a bug about this.
compiz (core) - Warn: unhandled ConfigureNotify on 0x1c000ad!
compiz (core) - Warn: this should never happen. you should probably file a bug about this.
compiz (core) - Warn: unhandled ConfigureNotify on 0x1c000ad!
compiz (core) - Warn: this should never happen. you should probably file a bug about this.
compiz (core) - Warn: unhandled ConfigureNotify on 0x1c000b0!
compiz (core) - Warn: this should never happen. you should probably file a bug about this.
compiz (core) - Warn: unhandled ConfigureNotify on 0x1c000b0!
compiz (core) - Warn: this should never happen. you should probably file a bug about this.
compiz (core) - Warn: unhandled ConfigureNotify on 0x1c000b3!
compiz (core) - Warn: this should never happen. you should probably file a bug about this.
compiz (core) - Warn: unhandled ConfigureNotify on 0x1c000b3!
compiz (core) - Warn: this should never happen. you should probably file a bug about this.
compiz (core) - Warn: unhandled ConfigureNotify on 0x1c000b6!
compiz (core) - Warn: this should never happen. you should probably file a bug about this.
compiz (core) - Warn: unhandled ConfigureNotify on 0x1c000b9!
compiz (core) - Warn: this should never happen. you should probably file a bug about this.
compiz (core) - Warn: unhandled ConfigureNotify on 0x1c000b9!
compiz (core) - Warn: this should never happen. you should probably file a bug about this.
compiz (core) - Warn: unhandled ConfigureNotify on 0x1c000bc!
compiz (core) - Warn: this should never happen. you should probably file a bug about this.
WARN 2013-07-08 15:51:36 unity.libindicator <unknown>:0 Desktop file '/usr/share/applications/libreoffice-calc.desktop' is using a deprecated format for its actions that will be dropped soon.
WARN 2013-07-08 15:51:36 unity.libindicator <unknown>:0 Desktop file '/usr/share/applications/libreoffice-writer.desktop' is using a deprecated format for its actions that will be dropped soon.
WARN 2013-07-08 15:51:37 unity <unknown>:0 Failed to fetch type: No such interface `org.ayatana.bamf.window' on object at path /org/ayatana/bamf/window60817569
ERROR 2013-07-08 15:51:37 unity.glib-gobject <unknown>:0 g_object_unref: assertion `G_IS_OBJECT (object)' failed
Setting Update "main_menu_key"
Setting Update "run_key"
Setting Update "backlight_mode"

Any solution around?