For the third time this year, Apple has blocked the Java 6 and Java 7 plug-ins on Macs due to “multiple security issues” in versions older than the most current.

The update causes Java 6 installations older than update 51 to stop working, and for Java 7 versions older than update 25 are blocked, reports “MacNN” ( Java, an utility for developing application software and deploying it in a cross-platform computing environment, isn’t to be confused with programming language JavaScript, an interpreted computer programming language.