Version:           3.5.2 (using KDE 3.5.2, Kubuntu Package 4:3.5.2-0ubuntu16 dapper)
Compiler:          Target: i486-linux-gnu
OS:                Linux (i686) release 2.6.15-21-386

I was visiting a page, and right clicked on a link in order to open it on a new tab, when Konqueror suddenly crashed.

I launched again Konqueror and tried once again, and this time it worked fine.

This is the backtrace I got:

(no debugging symbols found)
Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
(no debugging symbols found)
[...]
(no debugging symbols found)
[Thread debugging using libthread_db enabled]
[New Thread -1231665472 (LWP 7621)]
(no debugging symbols found)
[...]
(no debugging symbols found)
[KCrash handler]
#6  0xb6994e84 in pthread_mutex_lock ()
   from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb7e0170e in pthread_mutex_lock () from /lib/tls/i686/cmov/libc.so.6
#8  0xb6f30a3c in XUnlockDisplay () from /usr/lib/libX11.so.6
#9  0xb6f4bec4 in XrmEnumerateDatabase () from /usr/lib/libX11.so.6
#10 0xb6f2fec9 in XKeysymToString () from /usr/lib/libX11.so.6
#11 0xb792f105 in KKeyServer::Sym::toString () from /usr/lib/libkdecore.so.4
#12 0xb792f683 in KKeyServer::Sym::toStringInternal ()
   from /usr/lib/libkdecore.so.4
#13 0xb792f727 in KKey::toStringInternal () from /usr/lib/libkdecore.so.4
#14 0xb793039b in KKeySequence::toStringInternal ()
   from /usr/lib/libkdecore.so.4
#15 0xb7931bfe in KShortcut::toStringInternal () from /usr/lib/libkdecore.so.4
#16 0xb6df92a2 in KAction::initPrivate () from /usr/lib/libkdeui.so.4
#17 0xb6dfcf87 in KAction::KAction () from /usr/lib/libkdeui.so.4
#18 0xb6e32b95 in KStdAction::create () from /usr/lib/libkdeui.so.4
#19 0xb6e33c66 in KStdAction::back () from /usr/lib/libkdeui.so.4
#20 0xb7c6e823 in KDirOperator::setupActions () from /usr/lib/libkio.so.4
#21 0xb7c701e5 in KDirOperator::KDirOperator () from /usr/lib/libkio.so.4
#22 0xb7cc3dc4 in KFileDialog::init () from /usr/lib/libkio.so.4
#23 0xb7cc5aa9 in KFileDialog::KFileDialog () from /usr/lib/libkio.so.4
#24 0xb7cc6083 in KFileDialog::getSaveURL () from /usr/lib/libkio.so.4
#25 0xb5edc56c in KHTMLPopupGUIClient::saveURL () from /usr/lib/libkhtml.so.4
#26 0xb5ee0e26 in KHTMLPopupGUIClient::slotSaveLinkAs ()
   from /usr/lib/libkhtml.so.4
#27 0xb5ee9690 in KHTMLPopupGUIClient::qt_invoke ()
   from /usr/lib/libkhtml.so.4
#28 0xb72f5e29 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#29 0xb72f68c4 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#30 0xb6d2c8a7 in KAction::activated () from /usr/lib/libkdeui.so.4
#31 0xb6d62674 in KAction::slotActivated () from /usr/lib/libkdeui.so.4
#32 0xb6d7dd96 in KAction::slotPopupActivated () from /usr/lib/libkdeui.so.4
#33 0xb6d7e04b in KAction::qt_invoke () from /usr/lib/libkdeui.so.4
#34 0xb72f5e29 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#35 0xb7688e1a in QSignal::signal () from /usr/lib/libqt-mt.so.3
#36 0xb73135a0 in QSignal::activate () from /usr/lib/libqt-mt.so.3
#37 0xb741aebd in QPopupMenu::mouseReleaseEvent () from /usr/lib/libqt-mt.so.3
#38 0xb73305fd in QWidget::event () from /usr/lib/libqt-mt.so.3
#39 0xb728bdc6 in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#40 0xb728c350 in QApplication::notify () from /usr/lib/libqt-mt.so.3
#41 0xb7958d7d in KApplication::notify () from /usr/lib/libkdecore.so.4
#42 0xb721d15d in QApplication::sendSpontaneousEvent ()
   from /usr/lib/libqt-mt.so.3
#43 0xb7218558 in QETWidget::translateMouseEvent ()
   from /usr/lib/libqt-mt.so.3
#44 0xb7216cf1 in QApplication::x11ProcessEvent () from /usr/lib/libqt-mt.so.3
#45 0xb7230473 in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#46 0xb72a48b7 in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#47 0xb728a901 in QApplication::enter_loop () from /usr/lib/libqt-mt.so.3
#48 0xb741fb31 in QPopupMenu::exec () from /usr/lib/libqt-mt.so.3
#49 0xb67579f4 in KonqMainWindow::slotPopupMenu ()
   from /usr/lib/libkdeinit_konqueror.so
#50 0xb67589cd in KonqMainWindow::slotPopupMenu ()
   from /usr/lib/libkdeinit_konqueror.so
#51 0xb6791057 in KonqMainWindow::qt_invoke ()
   from /usr/lib/libkdeinit_konqueror.so
#52 0xb72f5e29 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#53 0xb7f7f717 in KParts::BrowserExtension::popupMenu ()
   from /usr/lib/libkparts.so.2
#54 0xb5f07360 in KHTMLPart::popupMenu () from /usr/lib/libkhtml.so.4
#55 0xb5f08c6d in KHTMLPart::khtmlMousePressEvent ()
   from /usr/lib/libkhtml.so.4
#56 0xb5eb7973 in KHTMLPart::customEvent () from /usr/lib/libkhtml.so.4
#57 0xb72f30c7 in QObject::event () from /usr/lib/libqt-mt.so.3
#58 0xb728bdc6 in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#59 0xb728bfc2 in QApplication::notify () from /usr/lib/libqt-mt.so.3
#60 0xb7958d7d in KApplication::notify () from /usr/lib/libkdecore.so.4
#61 0xb5ecb4a1 in KHTMLView::viewportMousePressEvent ()
   from /usr/lib/libkhtml.so.4
#62 0xb742cf2e in QScrollView::eventFilter () from /usr/lib/libqt-mt.so.3
#63 0xb5ec072d in KHTMLView::eventFilter () from /usr/lib/libkhtml.so.4
#64 0xb72f2f72 in QObject::activate_filters () from /usr/lib/libqt-mt.so.3
#65 0xb72f2ff0 in QObject::event () from /usr/lib/libqt-mt.so.3
#66 0xb733051a in QWidget::event () from /usr/lib/libqt-mt.so.3
#67 0xb728bdc6 in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#68 0xb728c350 in QApplication::notify () from /usr/lib/libqt-mt.so.3
#69 0xb7958d7d in KApplication::notify () from /usr/lib/libkdecore.so.4
#70 0xb721d15d in QApplication::sendSpontaneousEvent ()
   from /usr/lib/libqt-mt.so.3
#71 0xb721880b in QETWidget::translateMouseEvent ()
   from /usr/lib/libqt-mt.so.3
#72 0xb7216cf1 in QApplication::x11ProcessEvent () from /usr/lib/libqt-mt.so.3
#73 0xb7230473 in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#74 0xb72a48b7 in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#75 0xb72a47da in QEventLoop::exec () from /usr/lib/libqt-mt.so.3
#76 0xb728a8d5 in QApplication::exec () from /usr/lib/libqt-mt.so.3
#77 0xb678ba51 in kdemain () from /usr/lib/libkdeinit_konqueror.so
#78 0xb7fab4f4 in kdeinitmain () from /usr/lib/kde3/konqueror.so
#79 0x0804e063 in ?? ()
#80 0x00000002 in ?? ()
#81 0x0813a518 in ?? ()
#82 0x00000001 in ?? ()
#83 0x00000000 in ?? ()