notify-osd crashed with signal 5 in _XReply()

I opened Kerbal Space Program when this crash occurred. The program is running fine. This error also occurs if I try to change the framerate limit setting.

ProblemType: Crash
DistroRelease: Ubuntu 13.04
Package: notify-osd 0.9.35daily12.11.28-0ubuntu1
ProcVersionSignature: Ubuntu 3.8.0-30.44-generic 3.8.13.6
Uname: Linux 3.8.0-30-generic x86_64
ApportVersion: 2.9.2-0ubuntu8.3
Architecture: amd64
CrashCounter: 1
Date: Sat Sep 7 19:49:52 2013
DesktopSession: 'ubuntu'
EcryptfsInUse: Yes
ExecutablePath: /usr/lib/x86_64-linux-gnu/notify-osd
GtkTheme: 'Ambiance'
IconTheme: 'ubuntu-mono-dark'
InstallationDate: Installed on 2012-10-19 (323 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MachineType: Hewlett-Packard HP ProBook 4430s
MarkForUpload: True
ProcCmdline: /usr/lib/x86_64-linux-gnu/notify-osd
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-30-generic root=UUID=d88fcb74-26b2-4ffe-98e7-ddaf138fd1cb ro quiet splash vt.handoff=7
RelatedPackageVersions:
 xserver-xorg 1:7.7+1ubuntu4
 libgl1-mesa-glx 9.2.0~git20130729+9.2.9b8ad643-0ubuntu0sarvatt~raring
 libdrm2 2.4.46+git20130702.c6d73cfe-0ubuntu0sarvatt~raring
 xserver-xorg-video-intel 2:2.21.15+git20130821.f57ce6ef-0ubuntu0sarvatt~raring
 xserver-xorg-video-ati 1:7.1.99+git20130730.6a278369-0ubuntu0sarvatt~raring
Signal: 5
SourcePackage: notify-osd
StacktraceTop:
 ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 _XReply () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 XSync () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 ?? () from /usr/lib/x86_64-linux-gnu/libcairo.so.2
Title: notify-osd crashed with signal 5 in _XReply()
UpgradeStatus: Upgraded to raring on 2013-04-27 (133 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sbuild sudo vboxusers video wireshark
dmi.bios.date: 09/18/2012
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68SRR Ver. F.29
dmi.board.name: 167E
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 22.24
dmi.chassis.asset.tag: CNU13652JC
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr68SRRVer.F.29:bd09/18/2012:svnHewlett-Packard:pnHPProBook4430s:pvrA0001D02:rvnHewlett-Packard:rn167E:rvrKBCVersion22.24:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP ProBook 4430s
dmi.product.version: A0001D02
dmi.sys.vendor: Hewlett-Packard