Version:            (using KDE 4.1.3)
OS:                Linux
Installed from:    Ubuntu Packages

This makes both konqueror and dolphin crash in my system:

1) Open a smb server using smb://x.x.x.x/. I next can see this computer shares.
2) Open a particular share which requires an user that has no password set (or blank password, not sure if its the same).
3) The dialog for entering user/password pops up.
4) Fill the user field, click OK, crash with the backtrace provided.

It used to work in the 3.5.9 kubuntu 8.04 version.

[KCrash handler]
#6  0xb8023430 in __kernel_vsyscall ()
#7  0xb6790880 in raise () from /lib/tls/i686/cmov/libc.so.6
#8  0xb6792248 in abort () from /lib/tls/i686/cmov/libc.so.6
#9  0xb7570795 in qt_message_output () from /usr/lib/libQtCore.so.4
#10 0xb7570872 in qFatal () from /usr/lib/libQtCore.so.4
#11 0xb7570915 in qt_assert () from /usr/lib/libQtCore.so.4
#12 0xb7dbcb18 in ?? () from /usr/lib/libkio.so.5
#13 0xb7dcb7b3 in ?? () from /usr/lib/libkio.so.5
#14 0xb767da60 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#15 0xb767e7e2 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#16 0xb7d903a9 in KIO::ListJob::entries () from /usr/lib/libkio.so.5
#17 0xb7d9c91b in ?? () from /usr/lib/libkio.so.5
#18 0xb7d9cb00 in KIO::ListJob::qt_metacall () from /usr/lib/libkio.so.5
#19 0xb767da60 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#20 0xb767e7e2 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#21 0xb7e5de73 in KIO::SlaveInterface::listEntries ()
   from /usr/lib/libkio.so.5
#22 0xb7e61ad9 in KIO::SlaveInterface::dispatch () from /usr/lib/libkio.so.5
#23 0xb7e5e6a7 in KIO::SlaveInterface::dispatch () from /usr/lib/libkio.so.5
#24 0xb7e4e6cd in KIO::Slave::gotInput () from /usr/lib/libkio.so.5
#25 0xb7e51113 in KIO::Slave::qt_metacall () from /usr/lib/libkio.so.5
#26 0xb767da60 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#27 0xb767e7e2 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#28 0xb7d5e8f7 in KIO::Connection::readyRead () from /usr/lib/libkio.so.5
#29 0xb7d609c9 in ?? () from /usr/lib/libkio.so.5
#30 0xb7d60b56 in KIO::Connection::qt_metacall () from /usr/lib/libkio.so.5
#31 0xb7676bfb in QMetaCallEvent::placeMetaCall ()
   from /usr/lib/libQtCore.so.4
#32 0xb7678771 in QObject::event () from /usr/lib/libQtCore.so.4
#33 0xb6c098ec in QApplicationPrivate::notify_helper ()
   from /usr/lib/libQtGui.so.4
#34 0xb6c1176e in QApplication::notify () from /usr/lib/libQtGui.so.4
#35 0xb7b37b2d in KApplication::notify () from /usr/lib/libkdeui.so.5
#36 0xb7668e61 in QCoreApplication::notifyInternal ()
   from /usr/lib/libQtCore.so.4
#37 0xb7669ae5 in QCoreApplicationPrivate::sendPostedEvents ()
   from /usr/lib/libQtCore.so.4
#38 0xb7669cdd in QCoreApplication::sendPostedEvents ()
   from /usr/lib/libQtCore.so.4
#39 0xb769382f in ?? () from /usr/lib/libQtCore.so.4
#40 0xb62be6f8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#41 0xb62c1da3 in ?? () from /usr/lib/libglib-2.0.so.0
#42 0xb62c1f61 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#43 0xb7693478 in QEventDispatcherGlib::processEvents ()
   from /usr/lib/libQtCore.so.4
#44 0xb6ca3ee5 in ?? () from /usr/lib/libQtGui.so.4
#45 0xb766752a in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#46 0xb76676ea in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#47 0xb7076907 in QDialog::exec () from /usr/lib/libQtGui.so.4
#48 0xb7aaf0f4 in KMessageBox::createKMessageBox ()
   from /usr/lib/libkdeui.so.5
#49 0xb7ab0071 in KMessageBox::createKMessageBox ()
   from /usr/lib/libkdeui.so.5
#50 0xb7ab2636 in KMessageBox::informationListWId ()
   from /usr/lib/libkdeui.so.5
#51 0xb7ab27c8 in KMessageBox::informationList () from /usr/lib/libkdeui.so.5
#52 0xb7ab2828 in KMessageBox::information () from /usr/lib/libkdeui.so.5
#53 0xb7b29d82 in KDialogJobUiDelegate::slotWarning ()
   from /usr/lib/libkdeui.so.5
#54 0xb7b29c60 in KDialogJobUiDelegate::qt_metacall ()
   from /usr/lib/libkdeui.so.5
#55 0xb7da3ee2 in KIO::JobUiDelegate::qt_metacall () from /usr/lib/libkio.so.5
#56 0xb767da60 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#57 0xb767de60 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#58 0xb7829497 in KJob::warning () from /usr/lib/libkdecore.so.5
#59 0xb7d92fbe in KIO::SimpleJob::slotWarning () from /usr/lib/libkio.so.5
#60 0xb7d95a0d in KIO::SimpleJob::qt_metacall () from /usr/lib/libkio.so.5
#61 0xb7d9ca6a in KIO::ListJob::qt_metacall () from /usr/lib/libkio.so.5
#62 0xb767da60 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#63 0xb767e7e2 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#64 0xb7e5d9f3 in KIO::SlaveInterface::warning () from /usr/lib/libkio.so.5
#65 0xb7e615c9 in KIO::SlaveInterface::dispatch () from /usr/lib/libkio.so.5
#66 0xb7e5e6a7 in KIO::SlaveInterface::dispatch () from /usr/lib/libkio.so.5
#67 0xb7e4e6cd in KIO::Slave::gotInput () from /usr/lib/libkio.so.5
#68 0xb7e51113 in KIO::Slave::qt_metacall () from /usr/lib/libkio.so.5
#69 0xb767da60 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#70 0xb767e7e2 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#71 0xb7d5e8f7 in KIO::Connection::readyRead () from /usr/lib/libkio.so.5
#72 0xb7d609c9 in ?? () from /usr/lib/libkio.so.5
#73 0xb7d60b56 in KIO::Connection::qt_metacall () from /usr/lib/libkio.so.5
#74 0xb7676bfb in QMetaCallEvent::placeMetaCall ()
   from /usr/lib/libQtCore.so.4
#75 0xb7678771 in QObject::event () from /usr/lib/libQtCore.so.4
#76 0xb6c098ec in QApplicationPrivate::notify_helper ()
   from /usr/lib/libQtGui.so.4
#77 0xb6c1176e in QApplication::notify () from /usr/lib/libQtGui.so.4
#78 0xb7b37b2d in KApplication::notify () from /usr/lib/libkdeui.so.5
#79 0xb7668e61 in QCoreApplication::notifyInternal ()
   from /usr/lib/libQtCore.so.4
#80 0xb7669ae5 in QCoreApplicationPrivate::sendPostedEvents ()
   from /usr/lib/libQtCore.so.4
#81 0xb7669cdd in QCoreApplication::sendPostedEvents ()
   from /usr/lib/libQtCore.so.4
#82 0xb769382f in ?? () from /usr/lib/libQtCore.so.4
#83 0xb62be6f8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#84 0xb62c1da3 in ?? () from /usr/lib/libglib-2.0.so.0
#85 0xb62c1f61 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#86 0xb7693478 in QEventDispatcherGlib::processEvents ()
   from /usr/lib/libQtCore.so.4
#87 0xb6ca3ee5 in ?? () from /usr/lib/libQtGui.so.4
#88 0xb766752a in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#89 0xb76676ea in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#90 0xb7669da5 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#91 0xb6c09767 in QApplication::exec () from /usr/lib/libQtGui.so.4
#92 0x0808522f in _start ()
#0  0xb8023430 in __kernel_vsyscall ()