tracker-extract crashed with signal 7 in MemStream::getChar()

[vaal]

in normal system work process, programs started browser Chrome and Terminal

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: tracker-extract 0.12.10-1
ProcVersionSignature: Ubuntu 3.2.0-18.29-generic 3.2.9
Uname: Linux 3.2.0-18-generic x86_64
ApportVersion: 1.94.1-0ubuntu2
Architecture: amd64
CheckboxSubmission: b4551a13b3fcc6be0b5337e5518229d5
CheckboxSystem: 4ed15c40009aa6f7770f606350a390a2
CrashCounter: 1
Date: Wed Mar 14 13:50:26 2012
ExecutablePath: /usr/lib/tracker/tracker-extract
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
ProcCmdline: /usr/lib/tracker/tracker-extract
Signal: 7
SourcePackage: tracker
StacktraceTop:
 MemStream::getChar() () from /usr/lib/x86_64-linux-gnu/libpoppler.so.19
 PDFDoc::checkHeader() () from /usr/lib/x86_64-linux-gnu/libpoppler.so.19
 PDFDoc::setup(GooString*, GooString*) () from /usr/lib/x86_64-linux-gnu/libpoppler.so.19
 PDFDoc::PDFDoc(BaseStream*, GooString*, GooString*, void*) () from /usr/lib/x86_64-linux-gnu/libpoppler.so.19
 poppler_document_new_from_data () from /usr/lib/x86_64-linux-gnu/libpoppler-glib.so.8
Title: tracker-extract crashed with signal 7 in MemStream::getChar()
UpgradeStatus: Upgraded to precise on 2012-03-12 (2 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

StacktraceTop:
 MemStream::getChar() () from /tmp/tmp35Got5/usr/lib/x86_64-linux-gnu/libpoppler.so.19
 PDFDoc::checkHeader() () from /tmp/tmp35Got5/usr/lib/x86_64-linux-gnu/libpoppler.so.19
 PDFDoc::setup(GooString*, GooString*) () from /tmp/tmp35Got5/usr/lib/x86_64-linux-gnu/libpoppler.so.19
 PDFDoc::PDFDoc(BaseStream*, GooString*, GooString*, void*) () from /tmp/tmp35Got5/usr/lib/x86_64-linux-gnu/libpoppler.so.19
 poppler_document_new_from_data () from /tmp/tmp35Got5/usr/lib/x86_64-linux-gnu/libpoppler-glib.so.8

[Launchpad Janitor (janitor)]

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