Has anyone installed this on a Zimbra machine yet? The info about the update says:

Java 2 Standard Edition (J2SE) 5.0 Release 4 delivers improved reliability and compatibility for Java 2 Platform Standard Edition 5.0 on Mac OS X v10.4.5 and later.

This release includes J2SE version 1.5.0_06. With this update J2SE 5.0 becomes the preferred Java version, superseding Java 1.4.2. Java 1.4.2 is still installed on your machine, but applications will run with J2SE 5.0 unless they specifically request Java 1.4.2.

For more details on this Update, please visit this website:kb article
Java has broken for me several times in the past with Apple updates, and not being a Java genius, I'm leery to take chances in case it breaks something again....Any advice from others? Thanks!