Customer reported problem via SR 73140286:

Problem: Our company has a web application that utilizes Java applets. All applets are signed. A very small percentage or our users receive an error message when an applet is launched saying that the applet uses both signed and unsigned content and should not be trusted. Frequently, the browser also hangs when this
message is displayed. This message is spurious as all applets are signed and the majority of users have no problem using the application even though they are hitting the same webpages/applets on numerous versions of Java including Java6 update 19 and 20.