Version:           3.5 (using KDE 3.5.0, compiled sources)
Compiler:          Target: i486-linux-gnu
OS:                Linux (i686) release 2.6.11-1-686-smp

Erratic crashes navigation sites, such as on going back to previous page, etc. (Note that there are similar crashes in kmail usually on "undo" or moving mail to another folder. Nothing consistant which is why I believe these are timing issues.

Konqueror crash dump indicates an assert failure:
Using host libthread_db library "/lib/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread 16384 (LWP 25803)]
[KCrash handler]
#5  0xb6b66851 in kill () from /lib/libc.so.6
#6  0xb6e60309 in pthread_kill () from /lib/libpthread.so.0
#7  0xb6e606c0 in raise () from /lib/libpthread.so.0
#8  0xb6b66606 in raise () from /lib/libc.so.6
#9  0xb6b67971 in abort () from /lib/libc.so.6
#10 0xb6b5fb40 in __assert_fail () from /lib/libc.so.6
#11 0xb6167fe6 in khtml::HTMLTokenizer::reset ()
   from /opt/kde3.5/lib/libkhtml.so.4
#12 0xb616df01 in khtml::HTMLTokenizer::~HTMLTokenizer ()
   from /opt/kde3.5/lib/libkhtml.so.4
#13 0xb613c292 in DOM::DocumentImpl::detach ()
   from /opt/kde3.5/lib/libkhtml.so.4
#14 0xb60ea978 in KHTMLPart::clear () from /opt/kde3.5/lib/libkhtml.so.4
#15 0xb6113121 in KHTMLPart::~KHTMLPart () from /opt/kde3.5/lib/libkhtml.so.4
#16 0xb60ea91c in KHTMLPart::clear () from /opt/kde3.5/lib/libkhtml.so.4
#17 0xb60fae3d in KHTMLPart::begin () from /opt/kde3.5/lib/libkhtml.so.4
#18 0xb62ac8f1 in KJS::Window::get () from /opt/kde3.5/lib/libkhtml.so.4
#19 0xb5fdb40c in KJS::Reference::getValue () from /opt/kde3.5/lib/libkjs.so.1
#20 0xb5fdb8cd in KJS::Node::evaluate () from /opt/kde3.5/lib/libkjs.so.1
#21 0xb5fec81f in KJS::AccessorNode2::evaluateReference ()
   from /opt/kde3.5/lib/libkjs.so.1
#22 0xb5febfcf in KJS::FunctionCallNode::evaluate ()
   from /opt/kde3.5/lib/libkjs.so.1
#23 0xb5fec81f in KJS::AccessorNode2::evaluateReference ()
   from /opt/kde3.5/lib/libkjs.so.1
#24 0xb5fdc978 in KJS::AssignNode::evaluate ()
   from /opt/kde3.5/lib/libkjs.so.1
#25 0xb5fee868 in KJS::ExprStatementNode::execute ()
   from /opt/kde3.5/lib/libkjs.so.1
#26 0xb5ff2b22 in KJS::SourceElementsNode::execute ()
   from /opt/kde3.5/lib/libkjs.so.1
#27 0xb5fee6f0 in KJS::BlockNode::execute () from /opt/kde3.5/lib/libkjs.so.1
#28 0xb5ff3606 in KJS::InterpreterImp::evaluate ()
   from /opt/kde3.5/lib/libkjs.so.1
#29 0xb5ff3ac9 in KJS::Interpreter::evaluate ()
   from /opt/kde3.5/lib/libkjs.so.1
#30 0xb62c4de1 in KJS::KJSProxyImpl::evaluate ()
   from /opt/kde3.5/lib/libkhtml.so.4
#31 0xb61139ea in KHTMLPart::executeScript ()
   from /opt/kde3.5/lib/libkhtml.so.4
#32 0xb616d8b7 in khtml::HTMLTokenizer::scriptExecution ()
   from /opt/kde3.5/lib/libkhtml.so.4
#33 0xb618a9d3 in khtml::HTMLTokenizer::scriptHandler ()
   from /opt/kde3.5/lib/libkhtml.so.4
#34 0xb618b9db in khtml::HTMLTokenizer::parseSpecial ()
   from /opt/kde3.5/lib/libkhtml.so.4
#35 0xb618bd73 in khtml::HTMLTokenizer::parseTag ()
   from /opt/kde3.5/lib/libkhtml.so.4
#36 0xb618e939 in khtml::HTMLTokenizer::write ()
   from /opt/kde3.5/lib/libkhtml.so.4
#37 0xb60e58c3 in KHTMLPart::write () from /opt/kde3.5/lib/libkhtml.so.4
#38 0xb60e5648 in KHTMLPart::slotRestoreData ()
   from /opt/kde3.5/lib/libkhtml.so.4
#39 0xb6127910 in KHTMLPart::qt_invoke () from /opt/kde3.5/lib/libkhtml.so.4
#40 0xb71cf9b7 in QObject::activate_signal ()
   from /opt/kde3.5/lib/libqt-mt.so.3
#41 0xb60d518a in KHTMLPageCacheDelivery::emitData ()
   from /opt/kde3.5/lib/libkhtml.so.4
#42 0xb60e1a0a in KHTMLPageCache::sendData ()
   from /opt/kde3.5/lib/libkhtml.so.4
#43 0xb60e1a9e in KHTMLPageCache::qt_invoke ()
   from /opt/kde3.5/lib/libkhtml.so.4
#44 0xb71cf9b7 in QObject::activate_signal ()
   from /opt/kde3.5/lib/libqt-mt.so.3
#45 0xb74f216a in QSignal::signal () from /opt/kde3.5/lib/libqt-mt.so.3
#46 0xb71ea9dc in QSignal::activate () from /opt/kde3.5/lib/libqt-mt.so.3
#47 0xb71f1c8c in QSingleShotTimer::event ()
   from /opt/kde3.5/lib/libqt-mt.so.3
#48 0xb7172c45 in QApplication::internalNotify ()
   from /opt/kde3.5/lib/libqt-mt.so.3
#49 0xb71735c2 in QApplication::notify () from /opt/kde3.5/lib/libqt-mt.so.3
#50 0xb7895adc in KApplication::notify () from /opt/kde3.5/lib/libkdecore.so.4
#51 0xb7167a89 in QEventLoop::activateTimers ()
   from /opt/kde3.5/lib/libqt-mt.so.3
#52 0xb71228d2 in QEventLoop::processEvents ()
   from /opt/kde3.5/lib/libqt-mt.so.3
#53 0xb71888a2 in QEventLoop::enterLoop () from /opt/kde3.5/lib/libqt-mt.so.3
#54 0xb71887a4 in QEventLoop::exec () from /opt/kde3.5/lib/libqt-mt.so.3
#55 0xb717266f in QApplication::exec () from /opt/kde3.5/lib/libqt-mt.so.3
#56 0xb688419c in kdemain () from /opt/kde3.5/lib/libkdeinit_konqueror.so
#57 0xb76cd6b0 in kdeinitmain () from /opt/kde3.5/lib/kde3/konqueror.so
#58 0x0804e1d8 in launch ()
#59 0x0804e83a in handle_launcher_request ()
#60 0x0804ef2e in handle_requests ()
#61 0x0804fea9 in main ()