Xorg crashed with SIGSEGV in select()

[Brausepaul]

I run Kubuntu 9.10 in a Virtualbox VM where I frequently get this error after using KPackeKit to update my system.

ProblemType: Crash
Architecture: amd64
CrashCounter: 1
Date: Sat Aug 8 10:25:29 2009
Disassembly: 0x7f03edce2eb0:
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/bin/Xorg
Lsusb:
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: innotek GmbH VirtualBox
Package: xserver-xorg-core 2:1.6.3-1ubuntu1
PciDisplay:
 00:02.0 VGA compatible controller [0300]: InnoTek Systemberatung GmbH VirtualBox Graphics Adapter [80ee:beef]
  Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
  Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
  Latency: 64
  Region 0: Memory at e0000000 (32-bit, prefetchable) [size=128M]
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-5-generic root=UUID=b7bca4c4-0154-4741-9d92-27d56bbcb6a5 ro quiet splash
ProcCmdline: /usr/bin/X -br -nolisten tcp :0 vt7 -auth /var/run/xauth/A:0-nhjkte
ProcEnviron:
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
ProcVersionSignature: Ubuntu 2.6.31-5.24-generic
RelatedPackageVersions:
 xserver-xorg 1:7.4+3ubuntu5
 libgl1-mesa-glx 7.5-1ubuntu1
 libdrm2 2.4.12-1ubuntu1
 xserver-xorg-video-intel 2:2.8.0-0ubuntu2
 xserver-xorg-video-ati 1:6.12.99+git20090629.f39cafc5-0ubuntu5
SegvAnalysis:
 Segfault happened at: 0x7f03edce2eb0:
 PC (0x7f03edce2eb0) in non-executable VMA region: 0x7f03edcae000-0x7f03edcf8000 r--p /usr/share/fonts/truetype/ttf-dejavu/DejaVuSansMono-Bold.ttf
SegvReason: executing non-writable VMA /usr/share/fonts/truetype/ttf-dejavu/DejaVuSansMono-Bold.ttf
Signal: 11
SourcePackage: xorg-server
StacktraceTop:
 select () from /lib/libc.so.6
 WaitForSomething ()
 Dispatch ()
 main ()
Title: Xorg crashed with SIGSEGV in select()
Uname: Linux 2.6.31-5-generic x86_64
UserGroups:

dmi.bios.date: 12/01/2006
dmi.bios.vendor: innotek GmbH
dmi.bios.version: VirtualBox
dmi.modalias: dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:
dmi.product.name: VirtualBox
dmi.product.version: 1.2
dmi.sys.vendor: innotek GmbH
fglrx: Not loaded
system:
 distro: Ubuntu
 architecture: x86_64kernel: 2.6.31-5-generic

[Apport retracing service (apport)]

StacktraceTop:__select_nocancel () from /lib/libc.so.6
WaitForSomething (
Dispatch () at ../../dix/dispatch.c:367
main (argc=<value optimized out>,