Just a quick heads-up, especially for anyone using Java in their web browser.
There's a "widely exploited" vulnerability in Java that could allow bypassing normal security when a Java applet is run silently upon visiting a web site. (ie It's a bad one). Users are being widely advised to disable Java in their browsers until this is fixed.
The good news is that Oracle just released update 11 for Java 7 that they say fixes this problem.
You should consider installing update 11 as quickly as possible.