Application: kfloppy (4.4.0)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-23-generic i686
Distribution: Ubuntu 10.04 LTS

-- Information about the crash:
I tried two times with different fd's with same computer and drive, results were same.
yours, jorma veijanen

The crash can be reproduced every time.

 -- Backtrace:
Application: KFloppy (kfloppy), signal: Segmentation fault
[KCrash Handler]
#6  QObject::connect (sender=0xe117, signal=0x805c26b "2done(KFAction *,bool)", receiver=0xa15b6d8, method=0x805c24e "1actionDone(KFAction *,bool)", type=Qt::AutoConnection)
    at kernel/qobject.cpp:2518
#7  0x0804f1ec in KFActionQueue::actionDone (this=0xa15b6d8, p=0xa2c8c98, success=true) at ../../kfloppy/format.cpp:149
#8  0x0804f319 in KFActionQueue::qt_metacall (this=0xa15b6d8, _c=QMetaObject::InvokeMetaMethod, _id=9, _a=0xbfa52aa4) at ./format.moc:165
#9  0x005fdc9a in QMetaObject::metacall (object=0xa15b6d8, cl=QMetaObject::ReadProperty, idx=9, argv=0xbfa52aa4) at kernel/qmetaobject.cpp:237
#10 0x0060c3d5 in QMetaObject::activate (sender=0xa2c8c98, m=0x805b6d4, local_signal_index=0, argv=0xbfa52aa4) at kernel/qobject.cpp:3293
#11 0x0804e3e1 in KFAction::done (this=0xa2c8c98, _t1=0xa2c8c98, _t2=true) at ./format.moc:97
#12 0x0804e77a in FloppyAction::processDone (this=0xa2c8c98, p=0x9faad10) at ../../kfloppy/format.cpp:339
#13 0x0804e52a in FloppyAction::qt_metacall (this=0xa2c8c98, _c=QMetaObject::InvokeMetaMethod, _id=9, _a=0xbfa52c08) at ./format.moc:228
#14 0x005fdc9a in QMetaObject::metacall (object=0xa2c8c98, cl=QMetaObject::ReadProperty, idx=9, argv=0xbfa52c08) at kernel/qmetaobject.cpp:237
#15 0x0060c3d5 in QMetaObject::activate (sender=0x9faad10, m=0x231a98, local_signal_index=0, argv=0xbfa52c08) at kernel/qobject.cpp:3293
#16 0x0021a4b3 in K3Process::processExited (this=0x9faad10, _t1=0x9faad10) at ./k3process.moc:107
#17 0x0021a4ff in K3Process::processHasExited (this=0x9faad10, state=0) at ../../kde3support/kdecore/k3process.cpp:757
#18 0x0021eb5f in K3ProcessController::slotDoHousekeeping (this=0xa0ccd48) at ../../kde3support/kdecore/k3processcontroller.cpp:257
#19 0x0021ec31 in K3ProcessController::qt_metacall (this=0xa0ccd48, _c=QMetaObject::InvokeMetaMethod, _id=4, _a=0xbfa52dc8) at ./k3processcontroller.moc:72
#20 0x005fdc9a in QMetaObject::metacall (object=0xa0ccd48, cl=QMetaObject::ReadProperty, idx=4, argv=0xbfa52dc8) at kernel/qmetaobject.cpp:237
#21 0x0060c3d5 in QMetaObject::activate (sender=0xa29e6a0, m=0x70c550, local_signal_index=0, argv=0xbfa52dc8) at kernel/qobject.cpp:3293
#22 0x0065d933 in QSocketNotifier::activated (this=0xa29e6a0, _t1=21) at .moc/release-shared/moc_qsocketnotifier.cpp:89
#23 0x006138e7 in QSocketNotifier::event (this=0xa29e6a0, e=0xbfa53254) at kernel/qsocketnotifier.cpp:317
#24 0x011114dc in QApplicationPrivate::notify_helper (this=0x9d1f110, receiver=0xa29e6a0, e=0xbfa53254) at kernel/qapplication.cpp:4300
#25 0x0111805e in QApplication::notify (this=0xbfa53590, receiver=0xa29e6a0, e=0xbfa53254) at kernel/qapplication.cpp:3704
#26 0x009a0f2a in KApplication::notify (this=0xbfa53590, receiver=0xa29e6a0, event=0xbfa53254) at ../../kdeui/kernel/kapplication.cpp:302
#27 0x005f8a3b in QCoreApplication::notifyInternal (this=0xbfa53590, receiver=0xa29e6a0, event=0xbfa53254) at kernel/qcoreapplication.cpp:704
#28 0x006249aa in QCoreApplication::sendEvent (source=0x9d21e48) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#29 socketNotifierSourceDispatch (source=0x9d21e48) at kernel/qeventdispatcher_glib.cpp:110
#30 0x023995e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#31 0x0239d2d8 in ?? () from /lib/libglib-2.0.so.0
#32 0x0239d4b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#33 0x0062460f in QEventDispatcherGlib::processEvents (this=0x9d1f0f0, flags=...) at kernel/qeventdispatcher_glib.cpp:414
#34 0x011d1135 in QGuiEventDispatcherGlib::processEvents (this=0x9d1f0f0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#35 0x005f7059 in QEventLoop::processEvents (this=0xbfa534f4, flags=) at kernel/qeventloop.cpp:149
#36 0x005f74aa in QEventLoop::exec (this=0xbfa534f4, flags=...) at kernel/qeventloop.cpp:201
#37 0x005fb69f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#38 0x01111577 in QApplication::exec () at kernel/qapplication.cpp:3579
#39 0x0804e167 in main (argc=3, argv=0xbfa53704) at ../../kfloppy/main.cpp:75

Reported using DrKonqi