About 90% of the time, when I start-up my VISAD application, any mouse or key clicks in the DisplayImplJ3D viewport window are ignored until I click on any other part of the window (window frame, any Swing component, etc). However, on occasion if I move the pointer to the DisplayImplJ3D viewport and click on button 1, the 3-D histogram goes ahead and rotates the way I would expect. Has anyone seen this behavior before and if so how can I fix it so the viewport reacts to mouse and key clicks immediately on start-up. The VISAD code I am using is based on the code available from http://www.wizards.dupont.com/Equinox/Equinox.html. P.S. I'm running under Solaris 8, fully patched, and java 1.4.0-beta3.