Sun Microsystems is reluctant to make Java source code available through an open-source model because it would encourage incompatible versions of the software, Sun’s top software executive said. Our Take: Funny, last night I tried to install the Symbian SDK and it bailed out because it wanted me to have Java 1.3.1 while I had Java 1.4.1. Talk about “incompatibilities”…Elsewhere, return on investment will be the key metric, says Jeff Anders, group marketing manager at Sun Microsystems. Enterprises must be able to build full enterprise applications and get the security of the Java platform — “not spend hundreds of thousands of dollars fixing security problems every year,” he maintains. Read the article at NewsFactor.