Crash at adding groups

:-? For certain albums I want to add groups. In this way it should be possible to give selective permission to each visitor.
So at 'New owner' I want to add a group. But Konqueror crashes after typing the second character in that field.

Who can help?

I added the KDE crach dump below.

Using host libthread_db library "/lib/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread 16384 (LWP 5686)]
[New Thread 32769 (LWP 6696)]
[Thread debugging using libthread_db enabled]
[New Thread 16384 (LWP 5686)]
[New Thread 32769 (LWP 6696)]
[Thread debugging using libthread_db enabled]
[New Thread 16384 (LWP 5686)]
[New Thread 32769 (LWP 6696)]
[KCrash handler]
#6 0x41d1b864 in KJS::XMLHttpRequest::abort ()
from /opt/kde3/lib/libkhtml.so.4
#7 0x41d1dd89 in KJS::XMLHttpRequest::open () from /opt/kde3/lib/libkhtml.so.4
#8 0x41d6db40 in KJS::XMLHttpRequestProtoFunc::tryCall ()
from /opt/kde3/lib/libkhtml.so.4
#9 0x41d85e37 in KJS::DOMFunction::call () from /opt/kde3/lib/libkhtml.so.4
#10 0x41e8662e in KJS::Object::call () from /opt/kde3/lib/libkjs.so.1
#11 0x41ea55ca in KJS::FunctionCallNode::evaluate ()
from /opt/kde3/lib/libkjs.so.1
#12 0x41e8a0c5 in KJS::ExprStatementNode::execute ()
from /opt/kde3/lib/libkjs.so.1
#13 0x41e87c26 in KJS::SourceElementsNode::execute ()
from /opt/kde3/lib/libkjs.so.1
#14 0x41e7c4af in KJS::BlockNode::execute () from /opt/kde3/lib/libkjs.so.1
#15 0x41e8a4c9 in KJS::FunctionBodyNode::execute ()
from /opt/kde3/lib/libkjs.so.1
#16 0x41e7c05c in KJS::DeclaredFunctionImp::execute ()
from /opt/kde3/lib/libkjs.so.1
#17 0x41e8e4f2 in KJS::FunctionImp::call () from /opt/kde3/lib/libkjs.so.1
#18 0x41e8662e in KJS::Object::call () from /opt/kde3/lib/libkjs.so.1
#19 0x41ea55ca in KJS::FunctionCallNode::evaluate ()
from /opt/kde3/lib/libkjs.so.1
#20 0x41e8a0c5 in KJS::ExprStatementNode::execute ()
from /opt/kde3/lib/libkjs.so.1
#21 0x41e87cc9 in KJS::SourceElementsNode::execute ()
from /opt/kde3/lib/libkjs.so.1
#22 0x41e7c4af in KJS::BlockNode::execute () from /opt/kde3/lib/libkjs.so.1
#23 0x41e8a4c9 in KJS::FunctionBodyNode::execute ()
from /opt/kde3/lib/libkjs.so.1
#24 0x41e7c05c in KJS::DeclaredFunctionImp::execute ()
from /opt/kde3/lib/libkjs.so.1
#25 0x41e8e4f2 in KJS::FunctionImp::call () from /opt/kde3/lib/libkjs.so.1
#26 0x41e8662e in KJS::Object::call () from /opt/kde3/lib/libkjs.so.1
#27 0x41ea55ca in KJS::FunctionCallNode::evaluate ()
from /opt/kde3/lib/libkjs.so.1
#28 0x41e8a0c5 in KJS::ExprStatementNode::execute ()
from /opt/kde3/lib/libkjs.so.1
#29 0x41e87c26 in KJS::SourceElementsNode::execute ()
from /opt/kde3/lib/libkjs.so.1
#30 0x41e7c4af in KJS::BlockNode::execute () from /opt/kde3/lib/libkjs.so.1
#31 0x41e8a4c9 in KJS::FunctionBodyNode::execute ()
from /opt/kde3/lib/libkjs.so.1
#32 0x41ea3ad6 in KJS::InterpreterImp::evaluate ()
from /opt/kde3/lib/libkjs.so.1
#33 0x41ea40ba in KJS::Interpreter::evaluate () from /opt/kde3/lib/libkjs.so.1
#34 0x41d85903 in KJS::KJSProxyImpl::evaluate ()
from /opt/kde3/lib/libkhtml.so.4
#35 0x41c1164e in KHTMLPart::executeScript () from /opt/kde3/lib/libkhtml.so.4
#36 0x41d32af8 in KJS::ScheduledAction::execute ()
from /opt/kde3/lib/libkhtml.so.4
#37 0x41d32eca in KJS::WindowQObject::timerEvent ()
from /opt/kde3/lib/libkhtml.so.4
#38 0x40be3b21 in QObject::event () from /usr/lib/qt3/lib/libqt-mt.so.3
#39 0x40b8140f in QApplication::internalNotify ()
from /usr/lib/qt3/lib/libqt-mt.so.3
#40 0x40b82fb9 in QApplication::notify () from /usr/lib/qt3/lib/libqt-mt.so.3
#41 0x4081ad5e in KApplication::notify () from /opt/kde3/lib/libkdecore.so.4
#42 0x40b75ccc in QEventLoop::activateTimers ()
from /usr/lib/qt3/lib/libqt-mt.so.3
#43 0x40b2fbe3 in QEventLoop::processEvents ()
from /usr/lib/qt3/lib/libqt-mt.so.3
#44 0x40b99071 in QEventLoop::enterLoop () from /usr/lib/qt3/lib/libqt-mt.so.3
#45 0x40b98eb6 in QEventLoop::exec () from /usr/lib/qt3/lib/libqt-mt.so.3
#46 0x40b82e8f in QApplication::exec () from /usr/lib/qt3/lib/libqt-mt.so.3
#47 0x416a82ec in kdemain () from /opt/kde3/lib/libkdeinit_konqueror.so
#48 0x0804e766 in launch ()
#49 0x0804ee7c in handle_launcher_request ()
#50 0x0804f439 in handle_requests ()
#51 0x0804fc1a in main ()

That's one long stack trace! I don't have Konqueror handy on this box, but I do at work. I'll check it out this week and see if I can figure out a workaround in our Javascript to keep Konqueror from dying.