dotty version 96c (09-24-96) lefty version 10 Mar 2005 graphviz version 2.8 (Fri Dec 8 11:26:38 UTC 2006) debian unstable, package version: ii graphviz 2.8-2.6 rich set of graph drawing tools
The right click menu in the graph window is unusable. It does not
highlight menu items or select them. The menu text is displayed but
does not respond to mouse input.
[ek] yes, this is caused on some systems when the num-lock mode is on.
it must somehow cause X to send different event ids.
I'll try to troubleshoot this.