Application: plasma-desktop (4.11.9)
KDE Platform Version: 4.13.1
Qt Version: 4.8.6
Operating System: Linux 3.13.0-30-generic i686
Distribution: Ubuntu 14.04 LTS

-- Information about the crash:
It just does after a while. I had Spotify, Firefox, Chromium and Skype up and running while this happened.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Shell de escritorio Plasma (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xb10f1a40 (LWP 1843))]

Thread 8 (Thread 0xa3ca0b40 (LWP 1850)):
#0  0xb76e6424 in __kernel_vsyscall ()
#1  0xb2097d4b in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:187
#2  0xb759b8ec in __pthread_cond_wait (cond=0xb31a58d0, mutex=0xb31a58b8) at forward.c:149
#3  0xb30a2c92 in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0xb30a2cdf in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0xb2093f70 in start_thread (arg=0xa3ca0b40) at pthread_create.c:312
#6  0xb758e70e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:129

Thread 7 (Thread 0xa1aa8b40 (LWP 1938)):
#0  0xb76e6424 in __kernel_vsyscall ()
#1  0xb759c392 in __GI___clock_gettime (clock_id=1, tp=0xa1aa7ff8) at ../sysdeps/unix/clock_gettime.c:115
#2  0xb5f158cc in do_gettime (frac=0xa1aa7ff0, sec=0xa1aa7fe8) at tools/qelapsedtimer_unix.cpp:127
#3  qt_gettime () at tools/qelapsedtimer_unix.cpp:144
#4  0xb5ffe2a2 in updateCurrentTime (this=0xa11028e4) at kernel/qeventdispatcher_unix.cpp:354
#5  QTimerInfoList::timerWait (this=0xa11028e4, tm=...) at kernel/qeventdispatcher_unix.cpp:460
#6  0xb5ffc82b in timerSourcePrepareHelper (src=<optimized out>, timeout=0xa1aa80ec) at kernel/qeventdispatcher_glib.cpp:143
#7  0xb5ffc8bd in timerSourcePrepare (source=0xa11028b0, timeout=0xa1aa80ec) at kernel/qeventdispatcher_glib.cpp:176
#8  0xb1f769b3 in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0xb1f772df in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb1f77528 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#11 0xb5ffc95f in QEventDispatcherGlib::processEvents (this=0xa1100468, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#12 0xb5fcb823 in QEventLoop::processEvents (this=this@entry=0xa1aa8258, flags=...) at kernel/qeventloop.cpp:149
#13 0xb5fcbb49 in QEventLoop::exec (this=this@entry=0xa1aa8258, flags=...) at kernel/qeventloop.cpp:204
#14 0xb5eb823d in QThread::exec (this=this@entry=0xa0ff078) at thread/qthread.cpp:537
#15 0xb5fabc44 in QInotifyFileSystemWatcherEngine::run (this=0xa0ff078) at io/qfilesystemwatcher_inotify.cpp:265
#16 0xb5ebab6f in QThreadPrivate::start (arg=0xa0ff078) at thread/qthread_unix.cpp:349
#17 0xb2093f70 in start_thread (arg=0xa1aa8b40) at pthread_create.c:312
#18 0xb758e70e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:129

Thread 6 (Thread 0xa10afb40 (LWP 1941)):
#0  0xb209712e in __pthread_mutex_unlock_usercnt (mutex=0xa0700558, decr=1) at pthread_mutex_unlock.c:57
#1  0xb759bb34 in pthread_mutex_unlock (mutex=0xa0700558) at forward.c:194
#2  0xb1fbc140 in g_mutex_unlock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb1f77280 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb1f77528 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb5ffc95f in QEventDispatcherGlib::processEvents (this=0xa0700468, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#6  0xb5fcb823 in QEventLoop::processEvents (this=this@entry=0xa10af258, flags=...) at kernel/qeventloop.cpp:149
#7  0xb5fcbb49 in QEventLoop::exec (this=this@entry=0xa10af258, flags=...) at kernel/qeventloop.cpp:204
#8  0xb5eb823d in QThread::exec (this=this@entry=0xa165e88) at thread/qthread.cpp:537
#9  0xb5fabc44 in QInotifyFileSystemWatcherEngine::run (this=0xa165e88) at io/qfilesystemwatcher_inotify.cpp:265
#10 0xb5ebab6f in QThreadPrivate::start (arg=0xa165e88) at thread/qthread_unix.cpp:349
#11 0xb2093f70 in start_thread (arg=0xa10afb40) at pthread_create.c:312
#12 0xb758e70e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:129

Thread 5 (Thread 0x9d402b40 (LWP 1946)):
#0  0xb5ffc957 in QEventDispatcherGlib::processEvents (this=0xa500248, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#1  0xb5fcb823 in QEventLoop::processEvents (this=this@entry=0x9d402288, flags=...) at kernel/qeventloop.cpp:149
#2  0xb5fcbb49 in QEventLoop::exec (this=this@entry=0x9d402288, flags=...) at kernel/qeventloop.cpp:204
#3  0xb5eb823d in QThread::exec (this=this@entry=0xa6a32e8) at thread/qthread.cpp:537
#4  0xb730206b in Plasma::StorageThread::run (this=0xa6a32e8) at ../../plasma/private/storagethread.cpp:326
#5  0xb5ebab6f in QThreadPrivate::start (arg=0xa6a32e8) at thread/qthread_unix.cpp:349
#6  0xb2093f70 in start_thread (arg=0x9d402b40) at pthread_create.c:312
#7  0xb758e70e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:129

Thread 4 (Thread 0xa767ab40 (LWP 2028)):
#0  0xb1f769b6 in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb1f772df in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb1f77528 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb5ffc95f in QEventDispatcherGlib::processEvents (this=0xa0702958, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#4  0xb5fcb823 in QEventLoop::processEvents (this=this@entry=0xa767a278, flags=...) at kernel/qeventloop.cpp:149
#5  0xb5fcbb49 in QEventLoop::exec (this=this@entry=0xa767a278, flags=...) at kernel/qeventloop.cpp:204
#6  0xb5eb823d in QThread::exec (this=this@entry=0xa187dd8) at thread/qthread.cpp:537
#7  0xb6b00afe in QDeclarativePixmapReader::run (this=0xa187dd8) at util/qdeclarativepixmapcache.cpp:576
#8  0xb5ebab6f in QThreadPrivate::start (arg=0xa187dd8) at thread/qthread_unix.cpp:349
#9  0xb2093f70 in start_thread (arg=0xa767ab40) at pthread_create.c:312
#10 0xb758e70e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:129

Thread 3 (Thread 0xa6b7fb40 (LWP 2029)):
#0  0xb76e6424 in __kernel_vsyscall ()
#1  0xb759c392 in __GI___clock_gettime (clock_id=1, tp=0xa6b7f018) at ../sysdeps/unix/clock_gettime.c:115
#2  0xb5f158cc in do_gettime (frac=0xa6b7f010, sec=0xa6b7f008) at tools/qelapsedtimer_unix.cpp:127
#3  qt_gettime () at tools/qelapsedtimer_unix.cpp:144
#4  0xb5ffe2a2 in updateCurrentTime (this=0xa1105034) at kernel/qeventdispatcher_unix.cpp:354
#5  QTimerInfoList::timerWait (this=0xa1105034, tm=...) at kernel/qeventdispatcher_unix.cpp:460
#6  0xb5ffc82b in timerSourcePrepareHelper (src=<optimized out>, timeout=0xa6b7f10c) at kernel/qeventdispatcher_glib.cpp:143
#7  0xb5ffc8bd in timerSourcePrepare (source=0xa1105000, timeout=0xa6b7f10c) at kernel/qeventdispatcher_glib.cpp:176
#8  0xb1f769b3 in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0xb1f772df in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb1f77528 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#11 0xb5ffc95f in QEventDispatcherGlib::processEvents (this=0xa1102b58, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#12 0xb5fcb823 in QEventLoop::processEvents (this=this@entry=0xa6b7f278, flags=...) at kernel/qeventloop.cpp:149
#13 0xb5fcbb49 in QEventLoop::exec (this=this@entry=0xa6b7f278, flags=...) at kernel/qeventloop.cpp:204
#14 0xb5eb823d in QThread::exec (this=this@entry=0xb48b4c0) at thread/qthread.cpp:537
#15 0xb6b00afe in QDeclarativePixmapReader::run (this=0xb48b4c0) at util/qdeclarativepixmapcache.cpp:576
#16 0xb5ebab6f in QThreadPrivate::start (arg=0xb48b4c0) at thread/qthread_unix.cpp:349
#17 0xb2093f70 in start_thread (arg=0xa6b7fb40) at pthread_create.c:312
#18 0xb758e70e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:129

Thread 2 (Thread 0xa6155b40 (LWP 2032)):
#0  0xb1fbbd2e in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb1fbc0f8 in g_mutex_lock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb1f76e0b in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb1f7737a in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb1f77528 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb5ffc95f in QEventDispatcherGlib::processEvents (this=0xb38ae90, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#6  0xb5fcb823 in QEventLoop::processEvents (this=this@entry=0xa6155278, flags=...) at kernel/qeventloop.cpp:149
#7  0xb5fcbb49 in QEventLoop::exec (this=this@entry=0xa6155278, flags=...) at kernel/qeventloop.cpp:204
#8  0xb5eb823d in QThread::exec (this=this@entry=0xb543c38) at thread/qthread.cpp:537
#9  0xb6b00afe in QDeclarativePixmapReader::run (this=0xb543c38) at util/qdeclarativepixmapcache.cpp:576
#10 0xb5ebab6f in QThreadPrivate::start (arg=0xb543c38) at thread/qthread_unix.cpp:349
#11 0xb2093f70 in start_thread (arg=0xa6155b40) at pthread_create.c:312
#12 0xb758e70e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:129

Thread 1 (Thread 0xb10f1a40 (LWP 1843)):
[KCrash Handler]
#7  QDeclarativeRefCount::release (this=0xd5d50) at qml/qdeclarativerefcount.cpp:64
#8  0xb6c5b318 in QDeclarativePropertyCache::clear (this=this@entry=0xc64f5c0) at qml/qdeclarativepropertycache.cpp:143
#9  0xb6c5b6eb in QDeclarativePropertyCache::~QDeclarativePropertyCache (this=0xc64f5c0, __in_chrg=<optimized out>) at qml/qdeclarativepropertycache.cpp:137
#10 0xb6c5b86c in QDeclarativePropertyCache::~QDeclarativePropertyCache (this=0xc64f5c0, __in_chrg=<optimized out>) at qml/qdeclarativepropertycache.cpp:138
#11 0xb6c097cc in QDeclarativeRefCount::release (this=0xc64f5c0) at qml/qdeclarativerefcount.cpp:66
#12 0xb6af7c55 in QDeclarativeOpenMetaObjectType::~QDeclarativeOpenMetaObjectType (this=0xa6f3b50, __in_chrg=<optimized out>) at util/qdeclarativeopenmetaobject.cpp:80
#13 0xb6b8e754 in ~VDMDelegateDataType (this=0xa6f3b50, __in_chrg=<optimized out>) at graphicsitems/qdeclarativevisualitemmodel.cpp:254
#14 VDMDelegateDataType::~VDMDelegateDataType (this=0xa6f3b50, __in_chrg=<optimized out>) at graphicsitems/qdeclarativevisualitemmodel.cpp:254
#15 0xb6c097cc in QDeclarativeRefCount::release (this=0xa6f3b50) at qml/qdeclarativerefcount.cpp:66
#16 0xb6af6b80 in QDeclarativeOpenMetaObject::~QDeclarativeOpenMetaObject (this=0xbd752a0, __in_chrg=<optimized out>) at util/qdeclarativeopenmetaobject.cpp:214
#17 0xb6b8e6e4 in ~QDeclarativeVisualDataModelDataMetaObject (this=0xbd752a0, __in_chrg=<optimized out>) at graphicsitems/qdeclarativevisualitemmodel.cpp:410
#18 QDeclarativeVisualDataModelDataMetaObject::~QDeclarativeVisualDataModelDataMetaObject (this=0xbd752a0, __in_chrg=<optimized out>) at graphicsitems/qdeclarativevisualitemmodel.cpp:410
#19 0xb5fe55d5 in QObjectPrivate::~QObjectPrivate (this=0xb2ba128, __in_chrg=<optimized out>) at kernel/qobject.cpp:175
#20 0xb5fe577c in QObjectPrivate::~QObjectPrivate (this=0xb2ba128, __in_chrg=<optimized out>) at kernel/qobject.cpp:185
#21 0xb5fe71c6 in cleanup (pointer=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:62
#22 ~QScopedPointer (this=0xb3d63dc, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:100
#23 QObject::~QObject (this=0xb3d63d8, __in_chrg=<optimized out>) at kernel/qobject.cpp:816
#24 0xb6b877b7 in QDeclarativeVisualDataModelData::~QDeclarativeVisualDataModelData (this=0xb3d63d8, __in_chrg=<optimized out>) at graphicsitems/qdeclarativevisualitemmodel.cpp:553
#25 0xb6b877dc in QDeclarativeVisualDataModelData::~QDeclarativeVisualDataModelData (this=0xb3d63d8, __in_chrg=<optimized out>) at graphicsitems/qdeclarativevisualitemmodel.cpp:555
#26 0xb5fe4bda in QObjectPrivate::deleteChildren (this=this@entry=0xb6d91f8) at kernel/qobject.cpp:1907
#27 0xb5fe7188 in QObject::~QObject (this=0xc1cdb28, __in_chrg=<optimized out>) at kernel/qobject.cpp:926
#28 0xb6b572c2 in ~QGraphicsObject (this=0xc1cdb28, __in_chrg=<optimized out>) at ../../include/QtGui/../../src/gui/graphicsview/qgraphicsitem.h:547
#29 QDeclarativeItem::~QDeclarativeItem (this=0xc1cdb28, __in_chrg=<optimized out>) at graphicsitems/qdeclarativeitem.cpp:1664
#30 0xa2ee92da in Plasma::FrameSvgItem::~FrameSvgItem (this=0xc1cdb28, __in_chrg=<optimized out>) at ../../../../plasma/declarativeimports/core/framesvgitem.cpp:73
#31 0xa2ed5b2a in ~QDeclarativeElement (this=0xc1cdb28, __in_chrg=<optimized out>) at /usr/include/qt4/QtDeclarative/qdeclarativeprivate.h:92
#32 QDeclarativePrivate::QDeclarativeElement<Plasma::FrameSvgItem>::~QDeclarativeElement (this=0xc1cdb28, __in_chrg=<optimized out>) at /usr/include/qt4/QtDeclarative/qdeclarativeprivate.h:92
#33 0xb5fe0553 in qDeleteInEventHandler (o=o@entry=0xc1cdb28) at kernel/qobject.cpp:4280
#34 0xb5fe6720 in QObject::event (this=0xc1cdb28, e=0xbb715e0) at kernel/qobject.cpp:1175
#35 0xb6b52194 in QDeclarativeItem::event (this=<optimized out>, ev=<optimized out>) at graphicsitems/qdeclarativeitem.cpp:3780
#36 0xb54d87f4 in QApplicationPrivate::notify_helper (this=0x9a2ab40, receiver=0xc1cdb28, e=0xbb715e0) at kernel/qapplication.cpp:4567
#37 0xb54df2d3 in QApplication::notify (this=0x9a14a50, receiver=receiver@entry=0xc1cdb28, e=e@entry=0xbb715e0) at kernel/qapplication.cpp:4353
#38 0xb66411f4 in KApplication::notify (this=0x9a14a50, receiver=0xc1cdb28, event=0xbb715e0) at ../../kdeui/kernel/kapplication.cpp:311
#39 0xb5fcce4a in QCoreApplication::notifyInternal (this=0x9a14a50, receiver=receiver@entry=0xc1cdb28, event=event@entry=0xbb715e0) at kernel/qcoreapplication.cpp:953
#40 0xb5fd070d in sendEvent (event=0xbb715e0, receiver=0xc1cdb28) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#41 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x99c8130) at kernel/qcoreapplication.cpp:1577
#42 0xb5fd0c1c in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1470
#43 0xb5ffd23e in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#44 postEventSourceDispatch (s=0x9a2e100) at kernel/qeventdispatcher_glib.cpp:287
#45 0xb1f771e3 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#46 0xb1f77468 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#47 0xb1f77528 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#48 0xb5ffc93b in QEventDispatcherGlib::processEvents (this=this@entry=0x99c8ed0, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#49 0xb558d5de in QGuiEventDispatcherGlib::processEvents (this=0x99c8ed0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#50 0xb5fcb823 in QEventLoop::processEvents (this=this@entry=0xbf869058, flags=...) at kernel/qeventloop.cpp:149
#51 0xb5fcbb49 in QEventLoop::exec (this=this@entry=0xbf869058, flags=...) at kernel/qeventloop.cpp:204
#52 0xb5fd18fe in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#53 0xb54d6a24 in QApplication::exec () at kernel/qapplication.cpp:3828
#54 0xb76a2d27 in kdemain (argc=1, argv=0xbf8691f4) at ../../../../plasma/desktop/shell/main.cpp:126
#55 0x0804855b in main (argc=1, argv=0xbf8691f4) at plasma-desktop_dummy.cpp:3

Reported using DrKonqi