Does the Java Plug-in product support Netscape 4.78 or 4.79 browsers?
Currently, 4.78 and 4.79 are not fully supported by the Java Plug-in product. If you experience any problem with these browsers, you may want to disable the option from Preference->Advanced->Enable Java Plug-in. This should resolve your problem. The other alternative is to use an older version of the Netscape browser, or use the Netscape 6 browser.