Mozilla has decided to disable all plug-ins by default in Firefox, except the latest version of Flash.
Mozilla has announced to block older versions of Java Development Kit (JDK) and Java Runtime Environment (JRE) plug-ins for Firefox to save users from possible vulnerabilities. Users have been advised to update their JDK and JRE installations.
Firefox 14 nightly has added another exciting feature: play plug-in contents only on demand. This feature is already present in Opera and Google Chrome, which blocks execution of all plug-in contents (like Flash) by default.