November 21, 2009
http://www.java.com/download/help/cacerts.xml

The security certificate has expired or is not yet valid

This article applies to:
  • Platform(s): All Platforms
  • Browser(s): All Browsers
  • Java version(s): 1.4.2_xx ,  1.3.0_xx ,  1.3.1_xx ,  1.4.0_xx ,  1.4.1_xx
SYMPTOMS

You may encounter the following security warning when running applets on or after January 7, 2004: Publisher authenticity verified by: "Verisign"
The security certificate was issued by a company that is trusted
The security certificate has expired or is not yet valid

or Publisher authenticity verified by: "Verisign"
The security certificate was issued by a company that is not trusted
The security certificate has expired or is not yet valid
SOLUTION

This issue is addressed in the following JRE releases:
  • JRE 1.4.2_03 and later
  • JRE 1.4.1_06 and later
  • JRE 1.3.1_10 and later
For personal computer users, please download and install the latest release of the JRE The instructions will lead you to download and install the latest version of the JRE.

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