This one is quick and to the point.
Time to disable Java in your browser. Switch to Firefox if you can. Check out these articles: http://krebsonsecurity.com/2013/01/what-you-need-to-know-about-the-java-exploit/ . also, see what I wrote and was published on Jerry Pournelle’s blog : http://www.jerrypournelle.com/chaosmanor/?p=11417 .
Do it now.