Version:           3.5.3 (using KDE KDE 3.5.3)
Installed from:    Gentoo Packages
OS:                Linux

Steps to reproduce:

1. Go to http://www.deutschepost.de
2. Click link "PLZ suchen" (right column of the screen)
3. A pop-up-window opens, type something in the form field "Strasse", "Nummer" (numerical field) and "Ort"
4. Hit Return
5. A warning appears that you transmit data unancrypted, hit return
6. Another warnung appears that you transmit data unancrypted, hit return
Konqueror crashes.

This problem exists through version 3.5.0 to 3.5.3

Output of backtrace

(no debugging symbols found)
Using host libthread_db library "/lib/libthread_db.so.1".
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`system-supplied DSO at 0xffffe000' has disappeared; keeping its symbols.
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[Thread debugging using libthread_db enabled]
[New Thread 16384 (LWP 18748)]
[KCrash handler]
#6  0xb7242e83 in QLineEdit::selectedText () from /usr/qt/3/lib/libqt-mt.so.3
#7  0xb7a9e2c0 in KLineEdit::keyPressEvent ()
   from /usr/kde/3.5/lib/libkdeui.so.4
#8  0xb625c47b in QMemArray<khtml::Length>::detach ()
   from /usr/kde/3.5/lib/libkhtml.so.4
#9  0xb625c801 in QMemArray<khtml::Length>::detach ()
   from /usr/kde/3.5/lib/libkhtml.so.4
#10 0xb62059a6 in QValueListPrivate<DOM::NodeImpl*>::~QValueListPrivate ()
   from /usr/kde/3.5/lib/libkhtml.so.4
#11 0xb620a0e2 in QValueListPrivate<DOM::NodeImpl*>::~QValueListPrivate ()
   from /usr/kde/3.5/lib/libkhtml.so.4
#12 0xb61c0aff in KStaticDeleter<QPtrList<DOM::DocumentImpl> >::~KStaticDeleter () from /usr/kde/3.5/lib/libkhtml.so.4
#13 0xb61c0895 in KStaticDeleter<QPtrList<DOM::DocumentImpl> >::~KStaticDeleter () from /usr/kde/3.5/lib/libkhtml.so.4
#14 0xb61c1465 in KStaticDeleter<QPtrList<DOM::DocumentImpl> >::~KStaticDeleter () from /usr/kde/3.5/lib/libkhtml.so.4
#15 0xb6145fa1 in KHTMLView::dispatchKeyEventHelper ()
   from /usr/kde/3.5/lib/libkhtml.so.4
#16 0xb6145ec4 in KHTMLView::dispatchKeyEvent ()
   from /usr/kde/3.5/lib/libkhtml.so.4
#17 0xb6146291 in KHTMLView::keyPressEvent ()
   from /usr/kde/3.5/lib/libkhtml.so.4
#18 0xb6147866 in KHTMLView::eventFilter ()
   from /usr/kde/3.5/lib/libkhtml.so.4
#19 0xb717ab4e in QObject::activate_filters ()
   from /usr/qt/3/lib/libqt-mt.so.3
#20 0xb717aa76 in QObject::event () from /usr/qt/3/lib/libqt-mt.so.3
#21 0xb71b292c in QWidget::event () from /usr/qt/3/lib/libqt-mt.so.3
#22 0xb7243a7e in QLineEdit::event () from /usr/qt/3/lib/libqt-mt.so.3
#23 0xb625f7ec in PaintBuffer::timerEvent ()
   from /usr/kde/3.5/lib/libkhtml.so.4
#24 0xb7120abc in QApplication::internalNotify ()
   from /usr/qt/3/lib/libqt-mt.so.3
#25 0xb71203ae in QApplication::notify () from /usr/qt/3/lib/libqt-mt.so.3
#26 0xb7785492 in KApplication::notify ()
   from /usr/kde/3.5/lib/libkdecore.so.4
#27 0xb70b85bc in QETWidget::translateKeyEvent ()
   from /usr/qt/3/lib/libqt-mt.so.3
#28 0xb70b3cc4 in QApplication::x11ProcessEvent ()
   from /usr/qt/3/lib/libqt-mt.so.3
#29 0xb70cb8da in QEventLoop::processEvents ()
   from /usr/qt/3/lib/libqt-mt.so.3
#30 0xb713282a in QEventLoop::enterLoop () from /usr/qt/3/lib/libqt-mt.so.3
#31 0xb71326c8 in QEventLoop::exec () from /usr/qt/3/lib/libqt-mt.so.3
#32 0xb7120ce1 in QApplication::exec () from /usr/qt/3/lib/libqt-mt.so.3
#33 0xb678700e in kdemain () from /usr/kde/3.5/lib/libkdeinit_konqueror.so
#34 0xb76797c6 in kdeinitmain () from /usr/kde/3.5/lib/kde3/konqueror.so
#35 0x0804ce86 in ?? ()
#36 0x00000002 in ?? ()
#37 0x0805b420 in ?? ()
#38 0x00000001 in ?? ()
#39 0x00000000 in ?? ()