Docky.exe crashed with signal 5 in _XError()

[dr-a]

Binary package hint: docky

I just received a crash report appeared suddenly

ProblemType: Crash
DistroRelease: Ubuntu 10.10
Package: docky 2.0.6-2
ProcVersionSignature: Ubuntu 2.6.35-20.29-generic 2.6.35.4
Uname: Linux 2.6.35-20-generic i686
Architecture: i386
Date: Tue Sep 14 13:08:37 2010
ExecutablePath: /usr/lib/docky/Docky.exe
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Beta i386 (20100901.1)
InterpreterPath: /usr/bin/mono
PackageArchitecture: all
ProcCmdline: mono /usr/lib/docky/Docky.exe
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
Signal: 5
SourcePackage: docky
StacktraceTop:
 ?? () from /usr/lib/libgdk-x11-2.0.so.0
 _XError () from /usr/lib/libX11.so.6
 ?? () from /usr/lib/libX11.so.6
 _XReply () from /usr/lib/libX11.so.6
 XShapeGetRectangles () from /usr/lib/libXext.so.6
Title: Docky.exe crashed with signal 5 in _XError()
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare