Server time on FA different from OS/system time

Due to Daylight Saving Time (DST) changes in my country (Mauritius: previously GMT+4 and not GMT+5), I have changed the OS/system time on the server. However, I notice that the Server Time in Firewall Analyzer > Settings > Server Diagnostics is still different from OS/system time. I do not want to uninstall and reinstall to solve this problem as I have read in your blogs/forums because I do not want to lose any settings. Please find below relevant details:
Network: Gigabit LAN
Firewall device: Firewall Analyzer interfaced with Squid Web Proxy
OS used: RedHat Enterprise Linux version 5
Firewall Analyzer Buid Version: 5000

Kindly revert back earliest as I need a prompt reply.