unity window decorator crashes while using Scilab/Xcos

Binary package hint: unity

Description: Ubuntu Natty (development branch)
Release: 11.04

compiz:
  Installed: 1:0.9.4git20110322-0ubuntu4
  Candidate: 1:0.9.4git20110322-0ubuntu4
  Version table:
 *** 1:0.9.4git20110322-0ubuntu4 0
        500 http://archive.ubuntu.com/ubuntu/ natty/main amd64 Packages
        100 /var/lib/dpkg/status
unity:
  Installed: 3.6.6-0ubuntu3
  Candidate: 3.6.6-0ubuntu3
  Version table:
 *** 3.6.6-0ubuntu3 0
        500 http://archive.ubuntu.com/ubuntu/ natty/main amd64 Packages
        100 /var/lib/dpkg/status

Steps to reproduce the problem:

1. start Scilab (in my case 5.3 from the official website)
2. launch Xcos [Menu](Applications→Xcos)
3. use Xcos (drag an item from the palette browser to the Xcos window right click on the item and open "Block parameters…"
close the dialog again. The window decorator should have been crashed now)

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: unity 3.6.6-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.38-7.38-generic 2.6.38
Uname: Linux 2.6.38-7-generic x86_64
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,decor,move,snap,compiztoolbox,regex,place,grid,resize,gnomecompat,session,imgpng,vpswitch,mousepoll,animation,workarounds,wall,expo,ezoom,staticswitcher,fade,scale,unityshell]
CompositorRunning: compiz
DRM.card0.DP.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
DRM.card0.HDMI.A.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1920x1080 1920x1080 1680x1050 1400x1050 1600x900 1280x1024 1280x1024 1440x900 1280x960 1280x800 1152x864 1280x720 1280x720 1024x768 1024x768 1024x768 832x624 800x600 800x600 800x600 800x600 720x576 720x480 640x480 640x480 640x480 640x480 720x400
 edid-base64: AP///////wA4o3lnAQEBATUTAQOAMx146vgFpFVNnSUSUFS/74CBAIFAgYCBwJUAkECzAKnAAjqAGHE4LUBYLEUA/h8RAAAeAAAA/QA4TB9TEQAKICAgICAgAAAA/ABFQTIzMVdNaQogICAgAAAA/wAwMTEwNTY2NE5CCiAgAe4CAQQAAR0AclHQHiBuKFUA/h8RAAAejArQiiDgLRAQPpYA/h8RAAAYjArQkCBAMSAMQFUA/h8RAAAYAR0AvFLQHiC4KFVA/h8RAAAeAjqA0HI4LUAQLEWA/h8RAAAeAR2AGHEcFiBYLCUA/h8RAACeAAAAAAAAAAAAAAAAAAAAFQ==
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
Date: Thu Mar 24 08:12:36 2011
DistUpgraded: Log time: 2011-03-18 14:25:17.020762
DistroCodename: natty
DistroVariant: ubuntu
ExecutablePath: /usr/bin/compiz
GraphicsCard:
 Intel Corporation 4 Series Chipset Integrated Graphics Controller [8086:2e22] (rev 03) (prog-if 00 [VGA controller])
   Subsystem: Micro-Star International Co., Ltd. Device [1462:7521]
   Subsystem: Micro-Star International Co., Ltd. Device [1462:7521]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110318)
InstallationMedia_: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110318)
InstallationMedia__: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110318)
InstallationMedia___: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110318)
MachineType: MICRO-STAR INTERNATIONAL CO.,LTD MS-7521
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-7-generic root=UUID=9bf80bd3-a330-4d0b-b199-0467bb403d8b ro quiet splash vt.handoff=7
ProcVersionSignature_: Ubuntu 2.6.38-7.38-generic 2.6.38
ProcVersionSignature__: Ubuntu 2.6.38-7.38-generic 2.6.38
ProcVersionSignature___: Ubuntu 2.6.38-7.38-generic 2.6.38
Renderer: Unknown
SourcePackage: unity
UpgradeStatus: Upgraded to natty on 2011-03-24 (0 days ago)
dmi.bios.date: 03/30/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: V4.6
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: G45M Digital (MS-7521)
dmi.board.vendor: MICRO-STAR INTERNATIONAL CO.,LTD
dmi.board.version: 2.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: MICRO-STAR INTERNATIONAL CO.,LTD
dmi.chassis.version: 2.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV4.6:bd03/30/2010:svnMICRO-STARINTERNATIONALCO.,LTD:pnMS-7521:pvr2.0:rvnMICRO-STARINTERNATIONALCO.,LTD:rnG45MDigital(MS-7521):rvr2.0:cvnMICRO-STARINTERNATIONALCO.,LTD:ct3:cvr2.0:
dmi.product.name: MS-7521
dmi.product.version: 2.0
dmi.sys.vendor: MICRO-STAR INTERNATIONAL CO.,LTD
version.compiz: compiz 1:0.9.4git20110322-0ubuntu4
version.libdrm2: libdrm2 2.4.23-1ubuntu5
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.1-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6~3ubuntu11
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu6