In 1.5.0_06 recently security pop-up dialogs has been changed (on the lines of mustang) but due to this change following security option inside the Java Control Panel has become invalid( these options are already been removed from the mustang )
- JCP > Advanced > Security
   * Warn if certificate authority cannot be verified
    * Warn if certificate is expired or not yet verfied

Since, with the current changes, these options has no effect on the security pop-ups so like mustang these should be removed from the tiger_UR also .