Leap second issue

Could you please help me to confirm whether my server is affected for leep second issue.. ? I see the below output while running the leep second script provided by redhat..

[root@cnh-netmon tmp]# ./leap_second_issue_detector.sh
[INFORMATION]
- Installed kernel version: 2.6.18-348.el5
After the leap second, this system will have a time which is different from the true/official time. If that is not desired, consult https://access.redhat.com/articles/15145 for details on configuring the system.