update-manager crashed with SIGABRT in __assert_fail_base()

[slalus]

while i updating my system "system update" avtomatikaly check unity to delete...

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: update-manager 1:0.156.7
ProcVersionSignature: Ubuntu 3.2.0-18.28-generic 3.2.9
Uname: Linux 3.2.0-18-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 1.94.1-0ubuntu1
Architecture: amd64
Date: Thu Mar 8 20:19:41 2012
ExecutablePath: /usr/bin/update-manager
GsettingsChanges:

InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120306)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/update-manager --dist-upgrade
ProcEnviron:
 PATH=(custom, no user)
 LANGUAGE=ru:en
 LANG=ru_RU.UTF-8
 SHELL=/bin/bash
 TERM=unknown
Signal: 6
SourcePackage: update-manager
StacktraceTop:
 raise () from /lib/x86_64-linux-gnu/libc.so.6
 abort () from /lib/x86_64-linux-gnu/libc.so.6
 ?? () from /lib/x86_64-linux-gnu/libc.so.6
 __assert_fail () from /lib/x86_64-linux-gnu/libc.so.6
 ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
Title: update-manager crashed with SIGABRT in raise()
UpgradeStatus: Upgraded to precise on 2012-03-08 (0 days ago)
UserGroups:

[Apport retracing service (apport)]

StacktraceTop:
 __assert_fail_base (fmt=<optimized out>, assertion=0x7fb294471b78 "!xcb_xlib_threads_sequence_lost", file=0x7fb294471e32 "../../src/xcb_io.c", line=<optimized out>, function=<optimized out>) at assert.c:94
 __GI___assert_fail (assertion=0x7fb294471b78 "!xcb_xlib_threads_sequence_lost", file=0x7fb294471e32 "../../src/xcb_io.c", line=273, function=0x7fb294471f58 "poll_for_event") at assert.c:103
 poll_for_event (dpy=<optimized out>) at ../../src/xcb_io.c:270
 poll_for_response (dpy=0xddf300) at ../../src/xcb_io.c:288
 _XReadEvents (dpy=0xddf300) at ../../src/xcb_io.c:423

[RedSingularity (redsingularity)]

Are you still getting this error message while using the update-manager?
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[RedSingularity (redsingularity)]

Marking public since there is no private information in the report.
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Ubuntu Bug Squad volunteer triager
http://wiki.ubuntu.com/BugSquad