twinkle crashes with error in libzrtpcpp-0.9.0-5

Binary package hint: libzrtpcpp-0.9-0

Start Twinkle, call a number, click on bye, Twinkle crashes with the following report:

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Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
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[Thread debugging using libthread_db enabled]
[New Thread -1250351408 (LWP 30682)]
[New Thread -1330480240 (LWP 30749)]
[New Thread -1322087536 (LWP 30719)]
[New Thread -1313694832 (LWP 30704)]
[New Thread -1305302128 (LWP 30703)]
[New Thread -1296909424 (LWP 30702)]
[New Thread -1288516720 (LWP 30701)]
[New Thread -1280124016 (LWP 30700)]
[New Thread -1271731312 (LWP 30699)]
[New Thread -1263338608 (LWP 30698)]
[New Thread -1250399344 (LWP 30697)]
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[KCrash handler]
#6 0xb76942a5 in ZRtp::stopZrtp () from /usr/lib/libzrtpcpp-0.9.so.0
#7 0xb769ac77 in ost::ZrtpQueue::stop () from /usr/lib/libzrtpcpp-0.9.so.0
#8 0xb769ca32 in ost::ZrtpQueue::~ZrtpQueue ()
   from /usr/lib/libzrtpcpp-0.9.so.0
#9 0x082b3323 in ?? ()
#10 0x082b1eda in ?? ()
#11 0x0829c70d in ?? ()
#12 0x0820dd15 in ?? ()
#13 0x0820ddf2 in ?? ()
#14 0x081ea5a8 in ?? ()
#15 0x08150540 in ?? ()
#16 0x08163271 in ?? ()
#17 0x081700d3 in ?? ()
#18 0x081701da in ?? ()
#19 0x0808a717 in ?? ()
#20 0x08136416 in ?? ()
#21 0xb71060e3 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#22 0xb7106b88 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#23 0xb74ba99c in QAction::activated () from /usr/lib/libqt-mt.so.3
#24 0xb7270420 in QAction::internalActivation () from /usr/lib/libqt-mt.so.3
#25 0xb74ba702 in QAction::qt_invoke () from /usr/lib/libqt-mt.so.3
#26 0xb71060e3 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#27 0xb7492468 in QSignal::signal () from /usr/lib/libqt-mt.so.3
#28 0xb7126092 in QSignal::activate () from /usr/lib/libqt-mt.so.3
#29 0xb722c823 in QPopupMenu::mouseReleaseEvent () from /usr/lib/libqt-mt.so.3
#30 0xb713ced1 in QWidget::event () from /usr/lib/libqt-mt.so.3
#31 0xb709d340 in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#32 0xb709f4fe in QApplication::notify () from /usr/lib/libqt-mt.so.3
#33 0xb7d172e2 in KApplication::notify () from /usr/lib/libkdecore.so.4
#34 0xb702facd in QApplication::sendSpontaneousEvent ()
   from /usr/lib/libqt-mt.so.3
#35 0xb702e40f in QETWidget::translateMouseEvent ()
   from /usr/lib/libqt-mt.so.3
#36 0xb702c81c in QApplication::x11ProcessEvent () from /usr/lib/libqt-mt.so.3
#37 0xb70439f4 in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#38 0xb70b7a1e in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#39 0xb70b782e in QEventLoop::exec () from /usr/lib/libqt-mt.so.3
#40 0xb709eee9 in QApplication::exec () from /usr/lib/libqt-mt.so.3
#41 0x0806fac7 in ?? ()
#42 0x080638bd in ?? ()
#43 0xb6a8eebc in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
#44 0x0805f491 in ?? ()