.
Thread 1 (process 19488):
#0  0xb7e52dc7 in pkgDepCache::Init ()
   from /usr/lib/libapt-pkg-libc6.4-6.so.3.53
#1  0xb6363473 in ept::t::cache::apt::State<ept::configuration::Apt>::open ()
   from /usr/lib/packagesearch/libaptplugin.so
#2  0xb636365e in ept::t::cache::apt::State<ept::configuration::Apt>::State ()
   from /usr/lib/packagesearch/libaptplugin.so
#3  0xb63641a4 in ept::t::cache::Package<ept::configuration::Apt>::anyVersion
    () from /usr/lib/packagesearch/libaptplugin.so
#4  0xb635e9ce in NApt::AptFrontPackage::description ()
   from /usr/lib/packagesearch/libaptplugin.so
#5  0xb6355045 in NApt::AptFrontPackageDB::search ()
   from /usr/lib/packagesearch/libaptplugin.so
#6  0xb633d482 in NPlugin::AptSearchPlugin::evaluateSearch ()
   from /usr/lib/packagesearch/libaptplugin.so
#7  0xb636953e in NPlugin::AptSearchPlugin::qt_metacall ()
   from /usr/lib/packagesearch/libaptplugin.so
#8  0xb7318aa8 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#9  0xb731942a in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#10 0xb778d887 in QLineEdit::returnPressed () from /usr/lib/libQtGui.so.4
#11 0xb779479e in QLineEdit::keyPressEvent () from /usr/lib/libQtGui.so.4
#12 0xb74f8b3b in QWidget::event () from /usr/lib/libQtGui.so.4
#13 0xb77952bc in QLineEdit::event () from /usr/lib/libQtGui.so.4
#14 0xb74ae190 in QApplicationPrivate::notify_helper ()
   from /usr/lib/libQtGui.so.4
#15 0xb74b0eb0 in QApplication::notify () from /usr/lib/libQtGui.so.4
#16 0xb74fe13e in ?? () from /usr/lib/libQtGui.so.4
#17 0xb7529bbf in ?? () from /usr/lib/libQtGui.so.4
#18 0xb752ba29 in ?? () from /usr/lib/libQtGui.so.4
#19 0xb7508229 in QApplication::x11ProcessEvent () from /usr/lib/libQtGui.so.4
#20 0xb752cf34 in ?? () from /usr/lib/libQtGui.so.4
#21 0xb6a86df2 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#22 0xb6a89dcf in ?? () from /usr/lib/libglib-2.0.so.0
#23 0x080b8690 in ?? ()
#24 0x00000000 in ?? ()