A few months ago, I blogged about how we plan to revamp the user experience in Java Web Start and Java Plug-in in Mustang. After considering all the inputs from the Java community, we have decided to make the new security dialogs available in the upcoming J2SE 5.0u6. Here are some screenshots from 5.0u6:Signed application with valid certificate:

More information on the valid certificate:

Hopefully, it will significantly improve the deployment user experience of your applications very soon.

- Stanley

P.S. Thanks Andy Herrick in the Java Deployment team for backporting this feature; the codebases between Mustang and Tiger are quite different, so this backport is actually more difficult than it seems.