software-center crashed with SIGSEGV in PyGILState_Ensure()

[ramana]

problem in synaptic package manager,please help me out from it.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: software-center 5.1.3.1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
ApportVersion: 1.90-0ubuntu1
Architecture: i386
CrashCounter: 1
Date: Fri Dec 16 16:08:18 2011
ExecutablePath: /usr/share/software-center/software-center
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/software-center
SegvAnalysis:
 Segfault happened at: 0x8119f70: mov 0x4(%ebx),%edx
 PC (0x08119f70) ok
 source "0x4(%ebx)" (0x00000004) not located in a known VMA region (needed readable region)!
 destination "%edx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: software-center
StacktraceTop:
 ?? ()
 PyGILState_Ensure ()
 pyglib_gil_state_ensure () from /usr/lib/libpyglib-gi-2.0-python2.7.so.0
 ?? () from /usr/lib/python2.7/dist-packages/gi/_gobject/_gobject.so
 g_datalist_clear (datalist=0x938e978) at /build/buildd/glib2.0-2.31.4.tested/./glib/gdataset.c:283
Title: software-center crashed with SIGSEGV in PyGILState_Ensure()
UpgradeStatus: Upgraded to precise on 2011-12-14 (2 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #893501, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.