Application: plasma-desktop (0.4)
KDE Platform Version: 4.6.3 (4.6.3) (Compiled from sources)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-gentoo-r6 x86_64
Distribution: "Gentoo Base System release 2.0.3"

-- Information about the crash:
- What I was doing when the application crashed:
I entered in the widget Qalculate! value H2, and then plasma crashed.

-- Backtrace:
Application: Оболочка Plasma (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f11787f8760 (LWP 6233))]

Thread 2 (Thread 0x7f115b1f5700 (LWP 6237)):
#0  0x00007f1175f18be7 in poll () from /lib64/libc.so.6
#1  0x00007f1172d56473 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f1172d5677e in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f11774a8f4a in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#4  0x00007f117747fea2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#5  0x00007f1177480201 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#6  0x00007f11773a0422 in QThread::exec() () from /usr/lib64/qt4/libQtCore.so.4
#7  0x00007f11774623ea in ?? () from /usr/lib64/qt4/libQtCore.so.4
#8  0x00007f11773a2f0d in ?? () from /usr/lib64/qt4/libQtCore.so.4
#9  0x00007f1177114a7d in start_thread () from /lib64/libpthread.so.0
#10 0x00007f1175f20d7d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f11787f8760 (LWP 6233)):
[KCrash Handler]
#6  0x00007f115c0644c3 in Calculator::getBestUnit(Unit*, bool) () from /usr/lib64/libqalculate.so.5
#7  0x00007f115c06484c in Calculator::getBestUnit(Unit*, bool) () from /usr/lib64/libqalculate.so.5
#8  0x00007f115c065dd4 in Calculator::convertToBestUnit(MathStructure const&, EvaluationOptions const&) () from /usr/lib64/libqalculate.so.5
#9  0x00007f115c066b63 in Calculator::calculate(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, EvaluationOptions const&, MathStructure*, MathStructure*, bool) () from /usr/lib64/libqalculate.so.5
#10 0x00007f115c7ba6ac in QalculateEngine::evaluate(QString const&) () from /usr/lib64/kde4/plasma_applet_qalculate.so
#11 0x00007f115c7a9c64 in QalculateApplet::evalNoHist() () from /usr/lib64/kde4/plasma_applet_qalculate.so
#12 0x00007f115c7a9b37 in QalculateApplet::evaluate() () from /usr/lib64/kde4/plasma_applet_qalculate.so
#13 0x00007f115c7aa4d9 in QalculateApplet::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/kde4/plasma_applet_qalculate.so
#14 0x00007f1177496af1 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib64/qt4/libQtCore.so.4
#15 0x00007f116cdfbc2f in Plasma::LineEdit::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/libplasma.so.3
#16 0x00007f1177496af1 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib64/qt4/libQtCore.so.4
#17 0x00007f1176a5a938 in QLineEdit::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/qt4/libQtGui.so.4
#18 0x00007f11782d81b7 in KLineEdit::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/libkdeui.so.5
#19 0x00007f1177496af1 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib64/qt4/libQtCore.so.4
#20 0x00007f1176a6201b in QLineControl::processKeyEvent(QKeyEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#21 0x00007f1176a58f60 in QLineEdit::keyPressEvent(QKeyEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#22 0x00007f11782d5974 in KLineEdit::keyPressEvent(QKeyEvent*) () from /usr/lib64/libkdeui.so.5
#23 0x00007f11766d7d79 in QWidget::event(QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#24 0x00007f1176a58a3a in QLineEdit::event(QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#25 0x00007f11782d4841 in KLineEdit::event(QEvent*) () from /usr/lib64/libkdeui.so.5
#26 0x00007f117668b285 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#27 0x00007f1176691682 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#28 0x00007f11782189c0 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#29 0x00007f1177480e6e in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/qt4/libQtCore.so.4
#30 0x00007f1176c32d7e in ?? () from /usr/lib64/qt4/libQtGui.so.4
#31 0x00007f1176c21a76 in QGraphicsItem::sceneEvent(QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#32 0x00007f1176c39fb3 in QGraphicsScene::keyPressEvent(QKeyEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#33 0x00007f1176c4e6b8 in QGraphicsScene::event(QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#34 0x00007f117668b285 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#35 0x00007f117668fea2 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#36 0x00007f11782189c0 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#37 0x00007f1177480e6e in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/qt4/libQtCore.so.4
#38 0x00007f1176c68877 in QGraphicsView::keyPressEvent(QKeyEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#39 0x00007f11766d7d79 in QWidget::event(QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#40 0x00007f1176a4b978 in QFrame::event(QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#41 0x00007f1176aca5a2 in QAbstractScrollArea::event(QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#42 0x00007f117668b285 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#43 0x00007f1176691682 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#44 0x00007f11782189c0 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#45 0x00007f1177480e6e in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/qt4/libQtCore.so.4
#46 0x00007f1176729f42 in ?? () from /usr/lib64/qt4/libQtGui.so.4
#47 0x00007f117672c22e in ?? () from /usr/lib64/qt4/libQtGui.so.4
#48 0x00007f117670673c in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#49 0x00007f117672f3b9 in ?? () from /usr/lib64/qt4/libQtGui.so.4
#50 0x00007f1172d528dc in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#51 0x00007f1172d565c1 in ?? () from /usr/lib64/libglib-2.0.so.0
#52 0x00007f1172d5677e in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#53 0x00007f11774a8f12 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#54 0x00007f117672ee12 in ?? () from /usr/lib64/qt4/libQtGui.so.4
#55 0x00007f117747fea2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#56 0x00007f1177480201 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#57 0x00007f1177483c77 in QCoreApplication::exec() () from /usr/lib64/qt4/libQtCore.so.4
#58 0x00007f1166cc091e in kdemain () from /usr/lib64/libkdeinit4_plasma-desktop.so
#59 0x0000000000407c17 in _start ()

Reported using DrKonqi