Jeremy, I just filed bug #434 where we use a Java3D application running on a Solaris 10 box displaying back via X11 to a Leopard 10.5.8 desktop running Xquartz 2.5.1 or 2.5.2. The problem is the window gets created, but the 3D graphics don't get drawn (the Java routines complain about the glversion being null). Downgrading to Xquartz 2.5.0 and everything is drawn/displayed properly (and there are no complaints about the glversion). I will not have a chance to try this on Snow Leopard or with the Xquartz 2.6.0-alphas until tonight eastern time. The java test program attached to bug #112 can be used to trigger the problem with 2.5.1 or 2.5.2 (the test program gets run on the remote box). What additional info do I need to pull and attach to the bug report to help you troubleshoot this? Thanks, Merle