The Java Control Panel should refresh the list of available JREs from the registry (or whatever platform-dependent mechanism is available via the Config class) upon launch. Right now the new Java Plug-In does this but the Java Control Panel does not, so the best and/or only way to get an up-to-date list of JREs in the Java Applet Runtime Settings is to run the new Java Plug-In against an applet first. This is extremely poor behavior and will be confusing to end users. It should be corrected.