Java SE JRE 7 update 21 is now available, with fixes for dozens of security-related issues. Immediate installation is highly recommended. Head on over to Oracle's Java download page and grab it now. There is also a version for Java 6 users, if any such animals still exist.

still lots of Java 6 code out there, thank you very much.
In fact many companies are still working to update their products to be compatible with Java 6, and some are as yet in the process of upgrading to 1.5 (yes, 1.4 code is still out in the wild in large amounts, even if some of it now runs on 1.5+ JVMs).

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