VBoxTestOGL crashed with SIGABRT in __assert_fail_base()

[Benjamin]

while I used VirtualBox

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: virtualbox 4.1.8-dfsg-2
ProcVersionSignature: Ubuntu 3.2.0-18.28-generic 3.2.9
Uname: Linux 3.2.0-18-generic i686
ApportVersion: 1.94.1-0ubuntu1
Architecture: i386
Date: Fri Mar 9 05:50:52 2012
EcryptfsInUse: Yes
ExecutablePath: /usr/lib/virtualbox/VBoxTestOGL
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20111129.1)
ProcCmdline: /usr/lib/virtualbox/VBoxTestOGL -test 2D
Signal: 6
SourcePackage: virtualbox
StacktraceTop:
 raise () from /lib/i386-linux-gnu/libc.so.6
 abort () from /lib/i386-linux-gnu/libc.so.6
 ?? () from /lib/i386-linux-gnu/libc.so.6
 __assert_fail () from /lib/i386-linux-gnu/libc.so.6
 ?? () from /usr/lib/i386-linux-gnu/libX11.so.6
Title: VBoxTestOGL crashed with SIGABRT in raise()
UpgradeStatus: Upgraded to precise on 2012-02-15 (22 days ago)
UserGroups: adm cdrom dip lpadmin mythtv plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 __assert_fail_base (fmt=0xbf2438 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=0x1b01d3c "!xcb_xlib_unknown_req_pending", file=0x1b01cea "../../src/xcb_io.c", line=164, function=0x1b01de7 "append_pending_request") at assert.c:94
 __GI___assert_fail (assertion=0x1b01d3c "!xcb_xlib_unknown_req_pending", file=0x1b01cea "../../src/xcb_io.c", line=164, function=0x1b01de7 "append_pending_request") at assert.c:103
 append_pending_request (dpy=<optimized out>, sequence=189) at ../../src/xcb_io.c:162
 _XReply (dpy=0x86fa780, rep=0xbfb565cc, extra=0, discard=1) at ../../src/xcb_io.c:584
 XQueryExtension (dpy=0x86fa780, name=0xdf8728 "GLX", major_opcode=0xbfb56630, first_event=0xbfb56634, first_error=0xbfb56638) at ../../src/QuExt.c:48

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.