I have intermittently seen the 'Configure System' page save action change the JDK install settings.

I have seen this occur twice now.

Our JDK install settings are pretty straightforward-- jdk6 – bound to install automatically from java.sun.com, version 6u43, and jdk7 – bound to install automatically from java.sun.com, version 7u40.

When this occurs, the jdk6 setting ends up pointing to jdk7, which results in a bunch of build failures.