update-apt-xapian-index crashed with SIGSEGV in sem_wait@@GLIBC_2.1()

[darkprophet]

Binary package hint: apt-xapian-index

error came up on logging in.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: apt-xapian-index 0.41ubuntu5
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic i686
Architecture: i386
CrashCounter: 1
Date: Mon Apr 4 17:32:30 2011
ExecutablePath: /usr/sbin/update-apt-xapian-index
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110302)
InterpreterPath: /usr/bin/python2.7
ProcCmdline: /usr/bin/python /usr/sbin/update-apt-xapian-index -q
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/sh
SegvAnalysis:
 Segfault happened at: 0x3f3799 <sem_wait@@GLIBC_2.1+9>: mov (%ebx),%eax
 PC (0x003f3799) ok
 source "(%ebx)" (0x00000107) not located in a known VMA region (needed readable region)!
 destination "%eax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: apt-xapian-index
StacktraceTop:
 sem_wait@@GLIBC_2.1 () from /lib/i386-linux-gnu/libpthread.so.0
 PyThread_acquire_lock ()
 PyEval_RestoreThread ()
 ?? () from /usr/lib/python2.7/dist-packages/xapian/_xapian.so
 PyEval_EvalFrameEx ()
Title: update-apt-xapian-index crashed with SIGSEGV in sem_wait@@GLIBC_2.1()
UpgradeStatus: Upgraded to natty on 2011-03-26 (8 days ago)
UserGroups:

[Apport retracing service (apport)]

StacktraceTop:
 sem_wait@@GLIBC_2.1 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/sem_wait.S:47
 PyThread_acquire_lock (lock=0x107, waitflag=1) at ../Python/thread_pthread.h:309
 PyEval_RestoreThread (tstate=0xa0fd050) at ../Python/ceval.c:357
 end (self=0x0, args=(<Document(this=<SwigPyObject at remote 0xac297a0>) at remote 0xadba48c>, 'XOAnatty')) at ../../../../python/modern/xapian_wrap.cc:1002
 _wrap_Document_add_term__SWIG_1 (self=0x0, args=(<Document(this=<SwigPyObject at remote 0xac297a0>) at remote 0xadba48c>, 'XOAnatty')) at ../../../../python/modern/xapian_wrap.cc:15567