Both Google Chrome and Firefox 4 beta handle the HTML tags in a new and more stringent way. The export in 0.9.0 to Java applet creates a malformed tag (actually been a problem for a while now but waited until 0.9.0 to see if this problem persisted):
At the top of the HTML file. Removing this tag completely allows Java applet to load just fine. Strangely, Firefox 3.x loads just fine, but not the newer browsers. Removing this one tag from the export fixes the problem completely.