Tomboy.exe crashed with SIGABRT in IA__gdk_window_set_geometry_hints()

Tomboy was just sitting there, started a sync with Ubuntu One, then during or shortly after, it crashed with this report.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: tomboy 1.8.0-1ubuntu1.1
Uname: Linux 3.2.0-030200rc2-generic i686
ApportVersion: 1.90-0ubuntu1
Architecture: i386
CheckboxSubmission: 9a284f3f6b4f7829abbe27ad9573a709
CheckboxSystem: 3935143777c965daaa64b51f0134f712
Date: Mon Dec 12 11:19:23 2011
EcryptfsInUse: Yes
ExecutablePath: /usr/lib/tomboy/Tomboy.exe
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110422)
InterpreterPath: /usr/bin/mono
ProcCmdline: mono /usr/lib/tomboy/Tomboy.exe --search
Signal: 6
SourcePackage: tomboy
StacktraceTop:
 IA__gdk_window_set_geometry_hints (window=0x0, geometry=0xbf9829f0, geom_mask=71) at /build/buildd/gtk+2.0-2.24.8/gdk/x11/gdkwindow-x11.c:2353
 gtk_window_move_resize (window=0xac769030) at /build/buildd/gtk+2.0-2.24.8/gtk/gtkwindow.c:6769
 gtk_window_check_resize (container=0xac769030) at /build/buildd/gtk+2.0-2.24.8/gtk/gtkwindow.c:5956
 g_cclosure_marshal_VOID__VOID (closure=0xb4fcb368, return_value=0x0, n_param_values=1, param_values=0xb3f41d90, invocation_hint=0xbf982bd0, marshal_data=0xb4c2bd40) at /build/buildd/glib2.0-2.31.2/./gobject/gmarshal.c:85
 g_type_class_meta_marshal (closure=0xb4fcb368, return_value=0x0, n_param_values=1, param_values=0xb3f41d90, invocation_hint=0xbf982bd0, marshal_data=0x174) at /build/buildd/glib2.0-2.31.2/./gobject/gclosure.c:885
Title: Tomboy.exe crashed with SIGABRT in IA__gdk_window_set_geometry_hints()
UpgradeStatus: Upgraded to precise on 2011-11-05 (36 days ago)
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