(gdb) bt
#0  0x000600c7 in ?? ()
#1  0xb657b1c1 in QDeclarativeItem::~QDeclarativeItem() () from /usr/lib/i386-linux-gnu/libQtDeclarative.so.4
#2  0xb653acd4 in ?? () from /usr/lib/i386-linux-gnu/libQtDeclarative.so.4
#3  0xb7202873 in qDeleteInEventHandler(QObject*) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#4  0xb720a4b0 in QObject::event(QEvent*) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#5  0xb657e494 in QDeclarativeItem::event(QEvent*) () from /usr/lib/i386-linux-gnu/libQtDeclarative.so.4
#6  0xb7619c7c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQtGui.so.4
#7  0xb761cb94 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQtGui.so.4
#8  0x08095005 in ?? ()
#9  0xb71ee90e in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#10 0xb71f2721 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#11 0xb71f2a8c in QCoreApplication::sendPostedEvents(QObject*, int) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#12 0xb7220aa4 in ?? () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#13 0xb6a043b3 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#14 0xb6a04750 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#15 0xb6a04831 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#16 0xb7220c21 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#17 0xb76d0a5a in ?? () from /usr/lib/i386-linux-gnu/libQtGui.so.4
#18 0xb71ed3ec in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#19 0xb71ed6e1 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#20 0xb71f33fa in QCoreApplication::exec() () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#21 0xb7617fc4 in QApplication::exec() () from /usr/lib/i386-linux-gnu/libQtGui.so.4
#22 0x080650bd in ?? ()
#23 0xb6b44935 in __libc_start_main (main=0x8065090, argc=1, ubp_av=0xbffff354, init=0x80fec80 <__libc_csu_init>, fini=0x80fecf0 <__libc_csu_fini>,
    rtld_fini=0xb7fed600 <_dl_fini>, stack_end=0xbffff34c) at libc-start.c:260
#24 0x080651c1 in _start ()