update-apt-xapian-index crashed with SIGSEGV in PyEval_EvalCodeEx()

[darkprophet]

Binary package hint: apt-xapian-index

error message came up during update to 11.04 beta

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
Date: Thu Mar 31 16:44:45 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: 0x80e1704 <PyEval_EvalCodeEx+244>: mov 0x8(%eax),%edx
 PC (0x080e1704) ok
 source "0x8(%eax)" (0xb3775034) not located in a known VMA region (needed readable region)!
 destination "%edx" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: apt-xapian-index
StacktraceTop:
 PyEval_EvalCodeEx ()
 ?? ()
 PyObject_Call ()
 ?? ()
 PyObject_Call ()
Title: update-apt-xapian-index crashed with SIGSEGV in PyEval_EvalCodeEx()
UpgradeStatus: Upgraded to natty on 2011-03-26 (5 days ago)
UserGroups:

[Apport retracing service (apport)]

StacktraceTop:
 PyEval_EvalCodeEx (co=0xb74c25c0, globals={'CallableProxyType': <type at remote 0x8247580>, 'WeakKeyDictionary': <classobj at remote 0xb74c086c>, '__all__': ['ref', 'proxy', 'getweakrefcount', 'getweakrefs', 'WeakKeyDictionary', 'ReferenceError', 'ReferenceType', 'ProxyType', 'CallableProxyType', 'ProxyTypes', 'WeakValueDictionary', 'WeakSet'], 'ProxyType': <type at remote 0x82474a0>, '__builtins__': {'bytearray': <type at remote 0x82833e0>, 'IndexError': <type at remote 0x823b1a0>, 'all': <built-in function all>, 'help': <_Helper at remote 0xb76f860c>, 'vars': <built-in function vars>, 'SyntaxError': <type at remote 0x823ae20>, 'unicode': <type at remote 0x8247760>, 'UnicodeDecodeError': <type at remote 0x823b600>, 'memoryview': <type at remote 0x8288380>, 'isinstance': <built-in function isinstance>, 'copyright': <_Printer(_Printer__data='Copyright (c) 2001-2011 Python Software Foundation.\nAll Rights Reserved.\n\nCopyright (c) 2000 BeOpen.com.\nAll Rights Reserved.\n\nCopyright (c) 1995-2001 Corporation for National Research Initiatives.\nAll Righ...(truncated), locals=0x0, args=0xb77118f8, argcount=4, kws=0x0, kwcount=0, defs=0x0, defcount=0, closure=0x0) at ../Python/ceval.c:3189
 function_call (func=<function at remote 0xb74c541c>, arg=(<KeyedRef at remote 0xae0f59c>, <Package(_changelog='', _pcache=<Cache(op_progress=<AptSilentProgress(subop='', percent=<float at remote 0xaad1b2c>, subOp='', major_change=0, majorChange=0, op='Building data structures', Op='Reading state information') at remote 0xab983ec>, _list=<apt_pkg.SourceList at remote 0xa933f68>, _callbacks={}, _weakref=<WeakValueDictionary(_remove=<function at remote 0xaaa9ed4>, data={'gnuradio-utils': <KeyedRef at remote 0xae0f6ec>}) at remote 0xab98b6c>, _records=<apt_pkg.PackageRecords at remote 0xac454ac>, _sorted_set=['2ping', '2vcard', '3270-common', '3dchess', '3depict', '4g8', '6tunnel', '9base', '9menu', '9mount', '9mount-dbg', '9wm', 'a2jmidid', 'a2mp3', 'a2ps', 'a2ps-perl-ja', 'a56', 'a7xpg', 'a7xpg-data', 'aa3d', 'aajm', 'aap', 'aap-doc', 'aaphoto', 'abby', 'abcde', 'abcm2ps', 'abcmidi', 'abcmidi-yaps', 'abe', 'abe-data', 'abi-compliance-checker', 'abicheck', 'abinit', 'abinit-doc', 'abiword', 'abiword-common', 'abiword-plugin-grammar', 'abiword-plugin-mathview', 'abntex...(truncated), kw=0x0) at ../Objects/funcobject.c:526
 PyObject_Call (func=<function at remote 0xb74c541c>, arg=(<KeyedRef at remote 0xae0f59c>, <Package(_changelog='', _pcache=<Cache(op_progress=<AptSilentProgress(subop='', percent=<float at remote 0xaad1b2c>, subOp='', major_change=0, majorChange=0, op='Building data structures', Op='Reading state information') at remote 0xab983ec>, _list=<apt_pkg.SourceList at remote 0xa933f68>, _callbacks={}, _weakref=<WeakValueDictionary(_remove=<function at remote 0xaaa9ed4>, data={'gnuradio-utils': <KeyedRef at remote 0xae0f6ec>}) at remote 0xab98b6c>, _records=<apt_pkg.PackageRecords at remote 0xac454ac>, _sorted_set=['2ping', '2vcard', '3270-common', '3dchess', '3depict', '4g8', '6tunnel', '9base', '9menu', '9mount', '9mount-dbg', '9wm', 'a2jmidid', 'a2mp3', 'a2ps', 'a2ps-perl-ja', 'a56', 'a7xpg', 'a7xpg-data', 'aa3d', 'aajm', 'aap', 'aap-doc...