"Jérôme Lacoste" <lacostej(a)oslo.geco-prakla.slb.com&gt; writes: There a quite a few reports of crashes like this with 20.4. I get this on solaris2.6 in 20.4 when I click three times button1 to select a line and then (without moving the mouse) click button2 to yank the selection. I seem to remember having seen this ages ago, but only on xemacsen compiled with support for CDE. Does the 'DragMotionProto' in the backtrace refer to DnD? Oliver, any ideas? Gunnar -- Gunnar Evermann Speech, Vision & Robotics Group Engineering Department Cambridge University