(gdb) bt 10
#0  ~QMainWindow (this=0x6df230) at widgets/qmainwindow.cpp:915
#1  0x00002b3b726d1856 in ~KMainWindow (this=0x6df230, __vtt_parm=0x42c048)
    at /space/kde/sources/3_5/kdelibs/kdeui/kmainwindow.cpp:322
#2  0x0000000000422574 in ~KmagApp (this=0x6df230)
    at /space/kde/sources/3_5/kdeaccessibility/kmag/kmag.cpp:125
#3  0x00002b3b744bc559 in QObject::event (this=0x6df230, e=0x773960) at kernel/qobject.cpp:750
#4  0x00002b3b744ee473 in QWidget::event (this=0x6df230, e=0x2b3b78759eb8) at kernel/qwidget.cpp:4678
#5  0x00002b3b7459ab85 in QMainWindow::event (this=0x6df230, e=0x773960)
    at widgets/qmainwindow.cpp:1687
#6  0x00002b3b744666dd in QApplication::internalNotify (this=<value optimized out>,
    receiver=0x6df230, e=0x773960) at kernel/qapplication.cpp:2636
#7  0x00002b3b744673be in QApplication::notify (this=0x7fff394a7df0, receiver=0x6df230, e=0x773960)
    at kernel/qapplication.cpp:2524
#8  0x00002b3b730439e8 in KApplication::notify (this=0x7fff394a7df0, receiver=0x6df230,
    event=0x773960) at /space/kde/sources/3_5/kdelibs/kdecore/kapplication.cpp:550
#9  0x00002b3b74467d3a in QApplication::sendPostedEvents (receiver=0x0, event_type=52)
    at kernel/qapplication.h:520
(More stack frames follow...)
(gdb) c
Continuing.

Program received signal SIGABRT, Aborted.
0x00002b3b7866a2b5 in raise () from /lib64/libc.so.6
(gdb) bt
#0  0x00002b3b7866a2b5 in raise () from /lib64/libc.so.6
#1  0x00002b3b7866b8a3 in abort () from /lib64/libc.so.6
#2  0x00002b3b786ad2f0 in ?? () from /lib64/libc.so.6
#3  0x00002b3b744f0589 in ~QWidget (this=0x6df230) at kernel/qwidget.cpp:973
#4  0x00002b3b726d1856 in ~KMainWindow (this=0x6df230, __vtt_parm=0x42c048)
    at /space/kde/sources/3_5/kdelibs/kdeui/kmainwindow.cpp:322
#5  0x0000000000422574 in ~KmagApp (this=0x6df230)
    at /space/kde/sources/3_5/kdeaccessibility/kmag/kmag.cpp:125
#6  0x00002b3b744bc559 in QObject::event (this=0x6df230, e=0x773960) at kernel/qobject.cpp:750
#7  0x00002b3b744ee473 in QWidget::event (this=0xa71, e=0xa71) at kernel/qwidget.cpp:4678
#8  0x00002b3b7459ab85 in QMainWindow::event (this=0x6df230, e=0x773960)
    at widgets/qmainwindow.cpp:1687
#9  0x00002b3b744666dd in QApplication::internalNotify (this=<value optimized out>,
    receiver=0x6df230, e=0x773960) at kernel/qapplication.cpp:2636
#10 0x00002b3b744673be in QApplication::notify (this=0x7fff394a7df0, receiver=0x6df230, e=0x773960)
    at kernel/qapplication.cpp:2524
#11 0x00002b3b730439e8 in KApplication::notify (this=0x7fff394a7df0, receiver=0x6df230,
    event=0x773960) at /space/kde/sources/3_5/kdelibs/kdecore/kapplication.cpp:550
#12 0x00002b3b74467d3a in QApplication::sendPostedEvents (receiver=0x0, event_type=52)
    at kernel/qapplication.h:520
#13 0x00002b3b7447afde in QEventLoop::enterLoop (this=0x6a10a0) at kernel/qeventloop.cpp:213
#14 0x00002b3b7447ae02 in QEventLoop::exec (this=0xa71) at kernel/qeventloop.cpp:145
#15 0x00000000004275c8 in main (argc=1, argv=0x7fff394a8088)
    at /space/kde/sources/3_5/kdeaccessibility/kmag/main.cpp:80