Application: muon-installer (1.2.1 "Caustic Carrionite")
KDE Platform Version: 4.7.2 (4.7.2)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-12-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:

I was downloading various emulators at the same time (Amiga,C64 Vic20 etc) 
System noted there was a conflict and then crashed.

-- Backtrace:
Application: Muon Software Center (muon-installer), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fc760179780 (LWP 4184))]

Thread 2 (Thread 0x7fc74ba8e700 (LWP 4185)):
#0  0x00007fc75cd54773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fc7595c9f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc7595ca429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc75ef11f3e in QEventDispatcherGlib::processEvents (this=0x2510f70, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fc75eee5cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fc75eee5ef7 in QEventLoop::exec (this=0x7fc74ba8ddd0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007fc75edfd27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007fc75eec8cbf in QInotifyFileSystemWatcherEngine::run (this=0x24f1c50) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fc75edffd05 in QThreadPrivate::start (arg=0x24f1c50) at thread/qthread_unix.cpp:331
#9  0x00007fc75a0abefc in start_thread (arg=0x7fc74ba8e700) at pthread_create.c:304
#10 0x00007fc75cd6089d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fc760179780 (LWP 4184)):
[KCrash Handler]
#6  FindPkg (Name=..., this=<optimized out>) at /usr/include/apt-pkg/depcache.h:342
#7  QApt::Backend::package (this=<optimized out>, name=<optimized out>) at /build/buildd/qapt-1.2.1/src/backend.cpp:349
#8  0x000000000041cb15 in Application::package (this=0x31e3ce0) at /build/buildd/muon-1.2.1/installer/Application.cpp:112
#9  0x00000000004207ed in ApplicationBackend::init (this=0x257c970) at /build/buildd/muon-1.2.1/installer/ApplicationBackend.cpp:84
#10 0x0000000000420dcc in ApplicationBackend::reload (this=0x257c970) at /build/buildd/muon-1.2.1/installer/ApplicationBackend.cpp:121
#11 0x0000000000420ff5 in ApplicationBackend::workerEvent (this=0x257c970, event=<optimized out>) at /build/buildd/muon-1.2.1/installer/ApplicationBackend.cpp:179
#12 0x000000000041c383 in ApplicationBackend::qt_metacall (this=0x257c970, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fffb1fcff90) at /build/buildd/muon-1.2.1/obj-x86_64-linux-gnu/installer/moc_ApplicationBackend.cpp:113
#13 0x00007fc75eef9eba in QMetaObject::activate (sender=0x24156b0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffb1fcff90) at kernel/qobject.cpp:3278
#14 0x00007fc75f689f41 in QApt::Backend::workerEvent (this=<optimized out>, _t1=QApt::CommitChangesFinished) at /build/buildd/qapt-1.2.1/obj-x86_64-linux-gnu/src/moc_backend.cxx:244
#15 0x00007fc75f68a19c in QApt::Backend::qt_metacall (this=0x24156b0, _c=QMetaObject::InvokeMetaMethod, _id=40, _a=0x7fffb1fd00a0) at /build/buildd/qapt-1.2.1/obj-x86_64-linux-gnu/src/moc_backend.cxx:204
#16 0x00007fc75eef9eba in QMetaObject::activate (sender=0x2548b90, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffb1fd00a0) at kernel/qobject.cpp:3278
#17 0x00007fc75f68aae1 in OrgKubuntuQaptworkerInterface::workerEvent (this=<optimized out>, _t1=6) at /build/buildd/qapt-1.2.1/obj-x86_64-linux-gnu/src/workerdbus.moc:228
#18 0x00007fc75f68aee5 in OrgKubuntuQaptworkerInterface::qt_metacall (this=0x2548b90, _c=QMetaObject::InvokeMetaMethod, _id=8, _a=0x7fffb1fd0580) at /build/buildd/qapt-1.2.1/obj-x86_64-linux-gnu/src/workerdbus.moc:131
#19 0x00007fc75b09c0e9 in QDBusConnectionPrivate::deliverCall (this=0x256e180, object=0x2548b90, msg=..., metaTypes=..., slotIdx=13) at qdbusintegrator.cpp:942
#20 0x00007fc75b0a538f in QDBusCallDeliveryEvent::placeMetaCall (this=<optimized out>, object=<optimized out>) at qdbusintegrator_p.h:103
#21 0x00007fc75eefda5e in QObject::event (this=0x2548b90, e=<optimized out>) at kernel/qobject.cpp:1217
#22 0x00007fc75d521424 in notify_helper (e=0x4222dd0, receiver=0x2548b90, this=0x23891f0) at kernel/qapplication.cpp:4486
#23 QApplicationPrivate::notify_helper (this=0x23891f0, receiver=0x2548b90, e=0x4222dd0) at kernel/qapplication.cpp:4458
#24 0x00007fc75d526291 in QApplication::notify (this=0x7fffb1fd0e10, receiver=0x2548b90, e=0x4222dd0) at kernel/qapplication.cpp:4365
#25 0x00007fc75e705126 in KApplication::notify (this=0x7fffb1fd0e10, receiver=0x2548b90, event=0x4222dd0) at ../../kdeui/kernel/kapplication.cpp:311
#26 0x00007fc75eee6afc in QCoreApplication::notifyInternal (this=0x7fffb1fd0e10, receiver=0x2548b90, event=0x4222dd0) at kernel/qcoreapplication.cpp:787
#27 0x00007fc75eeea51f in sendEvent (event=0x4222dd0, receiver=0x2548b90) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#28 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x235fbe0) at kernel/qcoreapplication.cpp:1428
#29 0x00007fc75ef11a73 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#30 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:277
#31 0x00007fc7595c9a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007fc7595ca258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007fc7595ca429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007fc75ef11ed6 in QEventDispatcherGlib::processEvents (this=0x23616f0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#35 0x00007fc75d5c907e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#36 0x00007fc75eee5cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#37 0x00007fc75eee5ef7 in QEventLoop::exec (this=0x7fffb1fd0da0, flags=...) at kernel/qeventloop.cpp:201
#38 0x00007fc75eeea789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#39 0x000000000041bd67 in main (argc=5, argv=0x7fffb1fd1088) at /build/buildd/muon-1.2.1/installer/main.cpp:61

Reported using DrKonqi