Application: muon-updater (1.9.80) KDE Platform Version: 4.9.98 Qt Version: 4.8.4 Operating System: Linux 3.8.0-3-generic x86_64 Distribution: Ubuntu Raring Ringtail (development branch) -- Information about the crash: - What I was doing when the application crashed: I was removing unwanted repositories from configure software sources. The crash does not seem to be reproducible. -- Backtrace: Application: Muon Update Manager (muon-updater), signal: Segmentation fault Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [Current thread is 1 (Thread 0x7fdac56587c0 (LWP 3677))] Thread 3 (Thread 0x7fdab0b07700 (LWP 3680)): #0 0x00007fdabe80d075 in __GI___pthread_mutex_lock (mutex=0x7fdaac000a60) at pthread_mutex_lock.c:95 #1 0x00007fdabe377b31 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007fdabe338113 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007fdabe33879e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007fdabe3389a4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007fdac2b690b6 in QEventDispatcherGlib::processEvents (this=0x7fdaac0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426 #6 0x00007fdac2b393ff in QEventLoop::processEvents (this=this@entry=0x7fdab0b06d90, flags=...) at kernel/qeventloop.cpp:149 #7 0x00007fdac2b39688 in QEventLoop::exec (this=0x7fdab0b06d90, flags=...) at kernel/qeventloop.cpp:204 #8 0x00007fdac2a3ac00 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542 #9 0x00007fdac2b19b2f in QInotifyFileSystemWatcherEngine::run (this=0x184e300) at io/qfilesystemwatcher_inotify.cpp:256 #10 0x00007fdac2a3dbdc in QThreadPrivate::start (arg=0x184e300) at thread/qthread_unix.cpp:338 #11 0x00007fdabe80af8f in start_thread (arg=0x7fdab0b07700) at pthread_create.c:311 #12 0x00007fdac23f0ded in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113 Thread 2 (Thread 0x7fdaa3370700 (LWP 3698)): #0 0x00007fdac23e439d in poll () at ../sysdeps/unix/syscall-template.S:81 #1 0x00007fdabe33887c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007fdabe3389a4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007fdac2b690b6 in QEventDispatcherGlib::processEvents (this=0x7fda940008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426 #4 0x00007fdac2b393ff in QEventLoop::processEvents (this=this@entry=0x7fdaa336fd90, flags=...) at kernel/qeventloop.cpp:149 #5 0x00007fdac2b39688 in QEventLoop::exec (this=0x7fdaa336fd90, flags=...) at kernel/qeventloop.cpp:204 #6 0x00007fdac2a3ac00 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542 #7 0x00007fdac2b19b2f in QInotifyFileSystemWatcherEngine::run (this=0x293ea90) at io/qfilesystemwatcher_inotify.cpp:256 #8 0x00007fdac2a3dbdc in QThreadPrivate::start (arg=0x293ea90) at thread/qthread_unix.cpp:338 #9 0x00007fdabe80af8f in start_thread (arg=0x7fdaa3370700) at pthread_create.c:311 #10 0x00007fdac23f0ded in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113 Thread 1 (Thread 0x7fdac56587c0 (LWP 3677)): [KCrash Handler] #6 FindPkg (Name=..., this=<optimized out>) at /usr/include/apt-pkg/depcache.h:348 #7 QApt::Backend::package (this=this@entry=0x17344c0, name=...) at /build/buildd/qapt-1.9.80/src/backend.cpp:339 #8 0x00007fdac465e083 in QApt::Backend::package (this=0x17344c0, name=...) at /build/buildd/qapt-1.9.80/src/backend.cpp:332 #9 0x00007fdab146aa4f in Application::package (this=0x7fda9ce7b170) at /build/buildd/muon-1.9.80/libmuon/backends/ApplicationBackend/Application.cpp:131 #10 0x00007fdab146b2b9 in Application::state (this=<optimized out>) at /build/buildd/muon-1.9.80/libmuon/backends/ApplicationBackend/Application.cpp:474 #11 0x00000000004163a7 in UpdateItem::checked (this=<optimized out>) at /build/buildd/muon-1.9.80/updater/UpdateModel/UpdateItem.cpp:194 #12 0x0000000000417368 in UpdateModel::data (this=<optimized out>, index=..., role=<optimized out>) at /build/buildd/muon-1.9.80/updater/UpdateModel/UpdateModel.cpp:84 #13 0x00007fdac3ace939 in data (arole=10, this=0x7fff34a4df00) at ../../include/QtCore/../../src/corelib/kernel/qabstractitemmodel.h:402 #14 QStyledItemDelegate::initStyleOption (this=0x1854440, option=0x7fff34a4dcc0, index=...) at itemviews/qstyleditemdelegate.cpp:339 #15 0x00007fdac3acf465 in QStyledItemDelegate::paint (this=0x1854440, painter=0x7fff34a4e250, option=..., index=...) at itemviews/qstyleditemdelegate.cpp:425 #16 0x00007fdac3a6d273 in QTreeView::drawRow (this=0x1813900, painter=0x7fff34a4e250, option=..., index=...) at itemviews/qtreeview.cpp:1694 #17 0x00007fdac3a71b5f in QTreeView::drawTree (this=this@entry=0x1813900, painter=painter@entry=0x7fff34a4e250, region=...) at itemviews/qtreeview.cpp:1447 #18 0x00007fdac3a7236c in QTreeView::paintEvent (this=0x1813900, event=0x7fff34a4eec0) at itemviews/qtreeview.cpp:1275 #19 0x00007fdac3572a6e in QWidget::event (this=0x1813900, event=0x7fff34a4eec0) at kernel/qwidget.cpp:8532 #20 0x00007fdac3922536 in QFrame::event (this=0x1813900, e=0x7fff34a4eec0) at widgets/qframe.cpp:557 #21 0x00007fdac3a2e1eb in QAbstractItemView::viewportEvent (this=0x1813900, event=0x7fff34a4eec0) at itemviews/qabstractitemview.cpp:1644 #22 0x00007fdac3a72a81 in QTreeView::viewportEvent (this=0x1813900, event=0x7fff34a4eec0) at itemviews/qtreeview.cpp:1257 #23 0x00007fdac2b3a816 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<optimized out>, receiver=0x17ee520, event=0x7fff34a4eec0) at kernel/qcoreapplication.cpp:1056 #24 0x00007fdac3522f8c in QApplicationPrivate::notify_helper (this=this@entry=0x15f6e50, receiver=receiver@entry=0x17ee520, e=e@entry=0x7fff34a4eec0) at kernel/qapplication.cpp:4563 #25 0x00007fdac352742b in QApplication::notify (this=0x7fff34a52e10, receiver=0x17ee520, e=0x7fff34a4eec0) at kernel/qapplication.cpp:4428 #26 0x00007fdac422c7c6 in KApplication::notify (this=0x7fff34a52e10, receiver=0x17ee520, event=0x7fff34a4eec0) at ../../kdeui/kernel/kapplication.cpp:311 #27 0x00007fdac2b3a6ae in QCoreApplication::notifyInternal (this=0x7fff34a52e10, receiver=0x17ee520, event=0x7fff34a4eec0) at kernel/qcoreapplication.cpp:946 #28 0x00007fdac356e644 in sendSpontaneousEvent (event=0x7fff34a4eec0, receiver=0x17ee520) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234 #29 QWidgetPrivate::drawWidget (this=this@entry=0x17f03d0, pdev=pdev@entry=0x1a0bdb0, rgn=..., offset=..., flags=flags@entry=4, sharedPainter=sharedPainter@entry=0x0, backingStore=backingStore@entry=0x19a9310) at kernel/qwidget.cpp:5598 #30 0x00007fdac356f13f in QWidgetPrivate::paintSiblingsRecursive (this=this@entry=0x180b740, pdev=pdev@entry=0x1a0bdb0, siblings=..., index=<optimized out>, index@entry=3, rgn=..., offset=..., flags=flags@entry=4, sharedPainter=sharedPainter@entry=0x0, backingStore=backingStore@entry=0x19a9310) at kernel/qwidget.cpp:5807 #31 0x00007fdac356ef84 in QWidgetPrivate::paintSiblingsRecursive (this=this@entry=0x180b740, pdev=pdev@entry=0x1a0bdb0, siblings=..., index=3, index@entry=6, rgn=..., offset=..., flags=flags@entry=4, sharedPainter=sharedPainter@entry=0x0, backingStore=backingStore@entry=0x19a9310) at kernel/qwidget.cpp:5794 #32 0x00007fdac356ef84 in QWidgetPrivate::paintSiblingsRecursive (this=this@entry=0x180b740, pdev=pdev@entry=0x1a0bdb0, siblings=..., index=6, index@entry=7, rgn=..., offset=..., flags=flags@entry=4, sharedPainter=sharedPainter@entry=0x0, backingStore=backingStore@entry=0x19a9310) at kernel/qwidget.cpp:5794 #33 0x00007fdac356ef84 in QWidgetPrivate::paintSiblingsRecursive (this=this@entry=0x180b740, pdev=pdev@entry=0x1a0bdb0, siblings=..., index=7, index@entry=8, rgn=..., offset=..., flags=flags@entry=4, sharedPainter=sharedPainter@entry=0x0, backingStore=backingStore@entry=0x19a9310) at kernel/qwidget.cpp:5794 #34 0x00007fdac356ef84 in QWidgetPrivate::paintSiblingsRecursive (this=this@entry=0x180b740, pdev=pdev@entry=0x1a0bdb0, siblings=..., index=8, index@entry=9, rgn=..., offset=..., flags=flags@entry=4, sharedPainter=sharedPainter@entry=0x0, backingStore=backingStore@entry=0x19a9310) at kernel/qwidget.cpp:5794 #35 0x00007fdac356ef84 in QWidgetPrivate::paintSiblingsRecursive (this=0x180b740, pdev=0x1a0bdb0, siblings=..., index=9, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x19a9310) at kernel/qwidget.cpp:5794 #36 0x00007fdac356e1d5 in QWidgetPrivate::drawWidget (this=this@entry=0x180b740, pdev=pdev@entry=0x1a0bdb0, rgn=..., offset=..., flags=flags@entry=4, sharedPainter=sharedPainter@entry=0x0, backingStore=backingStore@entry=0x19a9310) at kernel/qwidget.cpp:5651 #37 0x00007fdac356f13f in QWidgetPrivate::paintSiblingsRecursive (this=0x1833a50, pdev=0x1a0bdb0, siblings=..., index=<optimized out>, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x19a9310) at kernel/qwidget.cpp:5807 #38 0x00007fdac356e1d5 in QWidgetPrivate::drawWidget (this=this@entry=0x1833a50, pdev=pdev@entry=0x1a0bdb0, rgn=..., offset=..., flags=flags@entry=4, sharedPainter=sharedPainter@entry=0x0, backingStore=backingStore@entry=0x19a9310) at kernel/qwidget.cpp:5651 #39 0x00007fdac356f13f in QWidgetPrivate::paintSiblingsRecursive (this=0x17f8bc0, pdev=0x1a0bdb0, siblings=..., index=<optimized out>, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x19a9310) at kernel/qwidget.cpp:5807 #40 0x00007fdac356e1d5 in QWidgetPrivate::drawWidget (this=this@entry=0x17f8bc0, pdev=pdev@entry=0x1a0bdb0, rgn=..., offset=..., flags=flags@entry=4, sharedPainter=sharedPainter@entry=0x0, backingStore=backingStore@entry=0x19a9310) at kernel/qwidget.cpp:5651 #41 0x00007fdac356f13f in QWidgetPrivate::paintSiblingsRecursive (this=0x176f880, pdev=0x1a0bdb0, siblings=..., index=<optimized out>, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x19a9310) at kernel/qwidget.cpp:5807 #42 0x00007fdac356e1d5 in QWidgetPrivate::drawWidget (this=this@entry=0x176f880, pdev=pdev@entry=0x1a0bdb0, rgn=..., offset=..., flags=flags@entry=4, sharedPainter=sharedPainter@entry=0x0, backingStore=backingStore@entry=0x19a9310) at kernel/qwidget.cpp:5651 #43 0x00007fdac356f13f in QWidgetPrivate::paintSiblingsRecursive (this=this@entry=0x174d150, pdev=pdev@entry=0x1a0bdb0, siblings=..., index=<optimized out>, index@entry=10, rgn=..., offset=..., flags=flags@entry=4, sharedPainter=sharedPainter@entry=0x0, backingStore=backingStore@entry=0x19a9310) at kernel/qwidget.cpp:5807 #44 0x00007fdac356ef84 in QWidgetPrivate::paintSiblingsRecursive (this=this@entry=0x174d150, pdev=pdev@entry=0x1a0bdb0, siblings=..., index=10, index@entry=17, rgn=..., offset=..., flags=flags@entry=4, sharedPainter=sharedPainter@entry=0x0, backingStore=backingStore@entry=0x19a9310) at kernel/qwidget.cpp:5794 #45 0x00007fdac356ef84 in QWidgetPrivate::paintSiblingsRecursive (this=0x174d150, pdev=0x1a0bdb0, siblings=..., index=17, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x19a9310) at kernel/qwidget.cpp:5794 #46 0x00007fdac356e1d5 in QWidgetPrivate::drawWidget (this=0x174d150, pdev=0x1a0bdb0, rgn=..., offset=..., flags=<optimized out>, sharedPainter=0x0, backingStore=0x19a9310) at kernel/qwidget.cpp:5651 #47 0x00007fdac373d1f8 in QWidgetBackingStore::sync (this=0x19a9310) at painting/qbackingstore.cpp:1373 #48 0x00007fdac3563910 in QWidgetPrivate::syncBackingStore (this=this@entry=0x174d150) at kernel/qwidget.cpp:1896 #49 0x00007fdac3572f14 in QWidget::event (this=0x174cf60, event=0x24096e0) at kernel/qwidget.cpp:8679 #50 0x00007fdac393bb9b in QMainWindow::event (this=0x174cf60, event=0x24096e0) at widgets/qmainwindow.cpp:1478 #51 0x00007fdac431e738 in KXmlGuiWindow::event (this=0x174cf60, ev=0x24096e0) at ../../kdeui/xmlgui/kxmlguiwindow.cpp:126 #52 0x00007fdac3522fbc in QApplicationPrivate::notify_helper (this=this@entry=0x15f6e50, receiver=receiver@entry=0x174cf60, e=e@entry=0x24096e0) at kernel/qapplication.cpp:4567 #53 0x00007fdac352742b in QApplication::notify (this=0x7fff34a52e10, receiver=0x174cf60, e=0x24096e0) at kernel/qapplication.cpp:4428 #54 0x00007fdac422c7c6 in KApplication::notify (this=0x7fff34a52e10, receiver=0x174cf60, event=0x24096e0) at ../../kdeui/kernel/kapplication.cpp:311 #55 0x00007fdac2b3a6ae in QCoreApplication::notifyInternal (this=0x7fff34a52e10, receiver=receiver@entry=0x174cf60, event=event@entry=0x24096e0) at kernel/qcoreapplication.cpp:946 #56 0x00007fdac2b3e531 in sendEvent (event=0x24096e0, receiver=0x174cf60) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231 #57 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x15c5780) at kernel/qcoreapplication.cpp:1570 #58 0x00007fdac2b68f03 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236 #59 postEventSourceDispatch (s=0x15f31f0) at kernel/qeventdispatcher_glib.cpp:279 #60 0x00007fdabe3385a5 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #61 0x00007fdabe3388e8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #62 0x00007fdabe3389a4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #63 0x00007fdac2b69096 in QEventDispatcherGlib::processEvents (this=0x15c70e0, flags=...) at kernel/qeventdispatcher_glib.cpp:424 #64 0x00007fdac35c7e0e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204 #65 0x00007fdac2b3e9df in QCoreApplication::processEvents (flags=...) at kernel/qcoreapplication.cpp:1133 #66 0x00007fdac466b1d3 in QApt::CacheBuildProgress::Update (this=<optimized out>) at /build/buildd/qapt-1.9.80/src/cache.cpp:34 #67 0x00007fdabffaabb0 in OpProgress::OverallProgress(unsigned long long, unsigned long long, unsigned long long, std::string const&) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12 #68 0x00007fdabfffb10e in pkgCacheGenerator::MakeStatusCache(pkgSourceList&, OpProgress*, MMap**, bool) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12 #69 0x00007fdabfff2211 in pkgCacheFile::BuildCaches(OpProgress*, bool) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12 #70 0x00007fdabfff25ac in pkgCacheFile::Open(OpProgress*, bool) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12 #71 0x00007fdac4664733 in QApt::Backend::reloadCache (this=0x17344c0) at /build/buildd/qapt-1.9.80/src/backend.cpp:174 #72 0x00007fdab1464950 in ApplicationBackend::reload (this=0x1788cb0) at /build/buildd/muon-1.9.80/libmuon/backends/ApplicationBackend/ApplicationBackend.cpp:170 #73 0x00007fdab14632d5 in qt_static_metacall (_a=<optimized out>, _id=<optimized out>, _o=<optimized out>, _c=<optimized out>) at /build/buildd/muon-1.9.80/obj-x86_64-linux-gnu/libmuon/backends/ApplicationBackend/moc_ApplicationBackend.cpp:89 #74 ApplicationBackend::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at /build/buildd/muon-1.9.80/obj-x86_64-linux-gnu/libmuon/backends/ApplicationBackend/moc_ApplicationBackend.cpp:79 #75 0x00007fdac2b500af in QMetaObject::activate (sender=0x1989ff0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff34a52190) at kernel/qobject.cpp:3539 #76 0x00007fdac502e122 in QAptActions::sourcesEditorClosed (this=<optimized out>, _t1=false) at /build/buildd/muon-1.9.80/obj-x86_64-linux-gnu/libmuonapt/moc_QAptActions.cpp:175 #77 0x00007fdac2b500af in QMetaObject::activate (sender=0x1ef9d40, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff34a522e0) at kernel/qobject.cpp:3539 #78 0x00007fdac2ad029f in QProcess::finished (this=this@entry=0x1ef9d40, _t1=1, _t2=QProcess::NormalExit) at .moc/release-shared/moc_qprocess.cpp:156 #79 0x00007fdac2ad4397 in QProcessPrivate::_q_processDied (this=0x2d007c0) at io/qprocess.cpp:1068 #80 0x00007fdac2ad441e in qt_static_metacall (_a=<optimized out>, _id=<optimized out>, _o=<optimized out>, _c=<optimized out>) at .moc/release-shared/moc_qprocess.cpp:92 #81 QProcess::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at .moc/release-shared/moc_qprocess.cpp:69 #82 0x00007fdac2b500af in QMetaObject::activate (sender=0x1d3f5c0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff34a52490) at kernel/qobject.cpp:3539 #83 0x00007fdac2b9ad6e in QSocketNotifier::activated (this=<optimized out>, _t1=92) at .moc/release-shared/moc_qsocketnotifier.cpp:103 #84 0x00007fdac2b57b0b in QSocketNotifier::event (this=0x1d3f5c0, e=0x7fff34a52ab0) at kernel/qsocketnotifier.cpp:317 #85 0x00007fdac3522fbc in QApplicationPrivate::notify_helper (this=this@entry=0x15f6e50, receiver=receiver@entry=0x1d3f5c0, e=e@entry=0x7fff34a52ab0) at kernel/qapplication.cpp:4567 #86 0x00007fdac352742b in QApplication::notify (this=0x7fff34a52e10, receiver=0x1d3f5c0, e=0x7fff34a52ab0) at kernel/qapplication.cpp:4428 #87 0x00007fdac422c7c6 in KApplication::notify (this=0x7fff34a52e10, receiver=0x1d3f5c0, event=0x7fff34a52ab0) at ../../kdeui/kernel/kapplication.cpp:311 #88 0x00007fdac2b3a6ae in QCoreApplication::notifyInternal (this=0x7fff34a52e10, receiver=0x1d3f5c0, event=0x7fff34a52ab0) at kernel/qcoreapplication.cpp:946 #89 0x00007fdac2b68898 in sendEvent (event=0x7fff34a52ab0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231 #90 socketNotifierSourceDispatch (source=0x15e7b40) at kernel/qeventdispatcher_glib.cpp:110 #91 0x00007fdabe3385a5 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #92 0x00007fdabe3388e8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #93 0x00007fdabe3389a4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #94 0x00007fdac2b690b6 in QEventDispatcherGlib::processEvents (this=0x15c70e0, flags=...) at kernel/qeventdispatcher_glib.cpp:426 #95 0x00007fdac35c7e0e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204 #96 0x00007fdac2b393ff in QEventLoop::processEvents (this=this@entry=0x7fff34a52cf0, flags=...) at kernel/qeventloop.cpp:149 #97 0x00007fdac2b39688 in QEventLoop::exec (this=0x7fff34a52cf0, flags=...) at kernel/qeventloop.cpp:204 #98 0x00007fdac2b3e848 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218 #99 0x000000000040e4d7 in main (argc=5, argv=0x7fff34a52f48) at /build/buildd/muon-1.9.80/updater/main.cpp:56 Possible duplicates by query: bug 314112, bug 313866, bug 313485, bug 294539. Reported using DrKonqi
Created attachment 76984 [details] New crash information added by DrKonqi muon-updater (1.9.80) on KDE Platform 4.10.00 using Qt 4.8.4 - What I was doing when the application crashed: I was attempting to remove one of the Ubuntu repositories. I realised that aptitude was open at the time and therefore expected muon to tell me that another package manager was active. No such warning was seen before muon crashed. -- Backtrace (Reduced): #6 FindPkg (Name=..., this=<optimized out>) at /usr/include/apt-pkg/depcache.h:348 #7 QApt::Backend::package (this=this@entry=0x171e190, name=...) at /build/buildd/qapt-1.9.80/src/backend.cpp:339 #8 0x00007fc54e0de083 in QApt::Backend::package (this=0x171e190, name=...) at /build/buildd/qapt-1.9.80/src/backend.cpp:332 #9 0x00007fc53aa6fa4f in Application::package (this=0x7fc5281672d0) at /build/buildd/muon-1.9.80/libmuon/backends/ApplicationBackend/Application.cpp:131 #10 0x00007fc53aa702b9 in Application::state (this=<optimized out>) at /build/buildd/muon-1.9.80/libmuon/backends/ApplicationBackend/Application.cpp:474
*** This bug has been marked as a duplicate of bug 313485 ***