Oracle released Java Release 7 Update 5 and Java Release 6 Update 33 in order to patch several security vulnerabilities. I expect older versions to have public exploit code available soon. IsJavaExploitable.com has been updated to assist everyone in detecting if they need to upgrade. Apple has also made patches available for OS X, which is a testament to Apple improving their consumer security. In the last couple of months Apple has made drastic improvements on response time in regards to Java.