Release Notes: http://www.oracle.com/technetwork/java/javase/7u11-relnotes-1896856.html
If you have disabled Java in the Java Control Panel, you will need to manually re-enable it after installing this release. You can find the check box in the Security tab of the Java Control Panel.
If you have previously disabled Java Plugin in the browser, you will need to manually re-enable it after installing this release. In Firefox, you can do this in the Add Ons -> Plugin screen. In Internet Explorer, this functionality is located in Tools -> Manage Add-ons.
As a consumer personally I’d choose to leave Java disabled in the browser, I haven’t noticed a difference in surfing.
http://krebsonsecurity.com/2013/01/oracle-ships-critical-security-update-for-java/
http://krebsonsecurity.com/2013/01/what-you-need-to-know-about-the-java-exploit/
