XFree86-4.1.0-77.EL When using the sun6 keymap (as added in bug #165126), and a Sun6 keyboard, the Props key, and the Right arrow have the same keycode (and hence the same keysym) as shown by xev. The problem doesn't occur on RHEL4.
Although this bug is filed against RHEL3, only RHEL 2.1 included XFree86 4.1. Regardless, we're not planning any further non-critical updates to RHEL3, let alone 2.1.