I have an applet that works fine in Safari but gives an error saying "applet not initialized" when i try to run it on IE 5.2. I am working on a Mac machine.. My applet runs fine on all browsers in Windows.
IE on the Mac is very old, and no longer supported. I don't think many people are still using it. What's more, it does not support the latest Apple JVMs for Java applets; certainly not Java 5, and I don't think Java 1.4 either. So if your applet uses any features not contained in Java 1.3, it will not work on IE. But I wouldn't worry about that - it's quite obsolete.