This entry from Security Metrics shows that they are able to determine that your system supports resumption of SSL sessions.
Resumption of SSL sessions is allow for in the protocol and does not indicate a vulnerability.
The SSL protocol allows for sessions to resume if the security is not compromised. This is a normal function and it means that you can continue your session and NOT lose data necessarily if your SSL session is interrupted. This is NOT a security risk or vulnerability.
No action required.