I got a not-always-reproducible crash on exit. The backtrace is:

Application: Konversation (konversation), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[KCrash Handler]
#5  0x00007f182991d267 in Phonon::PulseSupport::PulseSupport (this=0x53c3570) at ../../phonon/pulsesupport.cpp:822
#6  0x00007f182991d710 in Phonon::PulseSupport::getInstance () at ../../phonon/pulsesupport.cpp:784
#7  0x00007f18298f6143 in Phonon::AudioOutputPrivate::~AudioOutputPrivate (this=0x46256c0, __in_chrg=<optimized out>) at ../../phonon/audiooutput.cpp:543
#8  0x00007f18298f6229 in Phonon::AudioOutputPrivate::~AudioOutputPrivate (this=0x46256c0, __in_chrg=<optimized out>) at ../../phonon/audiooutput.cpp:549
#9  0x00007f18298f41d3 in Phonon::AbstractAudioOutput::~AbstractAudioOutput (this=0x3b419c0, __in_chrg=<optimized out>) at ../../phonon/abstractaudiooutput.cpp:38
#10 0x00007f18298fa2bf in ~AudioOutput (this=0x3b419c0, __in_chrg=<optimized out>) at ../../phonon/audiooutput.h:50
#11 Phonon::AudioOutput::~AudioOutput (this=0x3b419c0, __in_chrg=<optimized out>) at ../../phonon/audiooutput.h:50
#12 0x00007f1826935772 in QObjectPrivate::deleteChildren (this=this@entry=0x475f680) at kernel/qobject.cpp:1908
#13 0x00007f18269395b6 in QObject::~QObject (this=0x46b21f0, __in_chrg=<optimized out>) at kernel/qobject.cpp:927
#14 0x000000000048069b in ?? ()
#15 0x00000000004806ce in ?? ()
#16 0x00007f1826935772 in QObjectPrivate::deleteChildren (this=this@entry=0x13cbfe0) at kernel/qobject.cpp:1908
#17 0x00007f18269395b6 in QObject::~QObject (this=0x7fff27ad37b0, __in_chrg=<optimized out>) at kernel/qobject.cpp:927
#18 0x00007f1825a58a91 in QApplication::~QApplication (this=0x7fff27ad37b0, __in_chrg=<optimized out>) at kernel/qapplication.cpp:1100
#19 0x000000000045a6b0 in ?? ()
#20 0x000000000047ce13 in ?? ()
#21 0x00007f1824d6aead in __libc_start_main (main=<optimized out>, argc=<optimized out>, ubp_av=<optimized out>, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff27ad4648) at libc-start.c:228
#22 0x0000000000449f69 in _start ()

I could not decipher which package was missing to generate a better backtrace.

Some tips:
- I'm not using pulseaudio.
- I'm using the VLC phonon backend.
- During the crash I was using clementine, which in turn uses gstreamer.

This may be a phonon bug, feel free to reassign if so.

Reproducible: Sometimes

Steps to Reproduce:
1. Use konversation.
2. Generate a sound notice.
3. Close konversation.
Actual Results:  
Crash!