8.1_02 Enterprise Edition - certificate chain not trusted

Hi all

I got this error when I tru to click the name of the stand-alone instance from admin console, any idea what the problem is?

Operation 'getRuntimeStatus' failed in 'server' Config Mbean. Target exception message: error during JRMP connection establishment; nested exception is: javax.net.ssl.SSLHandshakeException: java.security.cert.CertificateException: The certificate chain from the server is not trusted

thanks

[450 byte] By [zerocoolera] at [2007-11-26 22:05:04]