Comment Re:"from user's machines" (Score 2) 307
What I remember from accidentally using OpenJDK a few years ago... Apache Tomcat, one of the most popular servlet containers, did not work with OpenJDK. The first thing I do with any Linux server is remove OpenJDK and install the latest Sun (now Oracle) version of Java.
I don't know what the incompatibility was, and maybe they have fixed it by now. But I don't care enough about "freedom" to bother with OpenJDK.