bleachbit.py crashed with SIGABRT in __assert_fail_base()

[Marc_Online_]

i was just using the program and after its finished it crashed.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: bleachbit 0.9.1-1
ProcVersionSignature: Ubuntu 3.2.0-17.27-generic-pae 3.2.6
Uname: Linux 3.2.0-17-generic-pae i686
ApportVersion: 1.93-0ubuntu2
Architecture: i386
Date: Mon Feb 27 11:38:28 2012
ExecutablePath: /usr/share/bleachbit/bleachbit.py
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20120216)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: python /usr/bin/bleachbit
Signal: 6
SourcePackage: bleachbit
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: bleachbit.py crashed with SIGABRT in raise()
UpgradeStatus: Upgraded to precise on 2012-02-17 (9 days ago)
UserGroups:

[Apport retracing service (apport)]

StacktraceTop:
 __assert_fail_base (fmt=0xb74c3680 <Address 0xb74c3680 out of bounds>, assertion=0x925ca50 "!xcb_xlib_threads_sequence_lost", file=0x925ccaa "../../src/xcb_io.c", line=273, function=0x925cd98 "poll_for_event") at assert.c:94
 __GI___assert_fail (assertion=0x925ca50 "!xcb_xlib_threads_sequence_lost", file=0x925ccaa "../../src/xcb_io.c", line=273, function=0x925cd98 "poll_for_event") at assert.c:103
 poll_for_event (dpy=0x9ac6470) at ../../src/xcb_io.c:270
 poll_for_response (dpy=0x9ac6470) at ../../src/xcb_io.c:288
 _XEventsQueued (dpy=0x9ac6470, mode=2) at ../../src/xcb_io.c:362

[Launchpad Janitor (janitor)]

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