It came to our attention that the Java application blocker is prompting that self-assigned or untrusted applications have been blocked due to security settings. Due to this issue, some of the Java ...

In addition to security fixes, the new update will also make changes to how Java applets—Web-based Java applications—are handled and presented in Web browsers that have the Java plug-in enabled.

“The Java 7u21 release introduces changes to security messages related to running Java applets and applications,” Oracle said in a technical document that explains the changes.