What he does is position the mouse with a button1 click, then
button3 to invoke x-mouse-kill. Top shows that XEmacs and Xorg are both
busy. Running pstack against the XEmacs process suggests they are busy
chatting with one another.
I haven't seen this before.
A couple of cheap shots: What happens if he puts down the mouse and
invokes M-x x-mouse-kill from the keyboard? What window managers are
you running? If he's running Motif, he might try playing with
What are they talking about, can you tell? For example, do you see
the selected text in there somewhere?
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