Plugin Switching and compatibility
From practical experience with a running intranet solution I have some suggestions: For applets Plugin Switching between different version of plugins can be done - but there seems to be a problem switching back to plugin 1.2.2 when plugin 1.4 is installed. This is needed for instance if 1.4 is for showing internet sites and 1.2 is needed for an intranet applet. Another useful thing would be the possiblity to combine different JRE versions in RMI applets. This would allow to update the server JRE without forcing the users to download new plugins.