If Palante set up your office server, it is very likely running Debian Linux version 6. We set up Debian as the operating system for our client servers due to its stability, flexibility, and low cost of operation. Debian is open source software, and all software updates and upgrades are free to download. However, security support updates for Debian 6 will be coming to an end soon. That means that servers running Debian 6 will need to be upgraded to Debian 7 or later; otherwise they will be at risk of experiencing security holes or other bugs.
Debian 7 was released May 4, 2013, and Debian 8 will be released later this year. Security support for Debian 6 will end on or before May 4, 2014, one year after Debian 7 was released. All Debian 6 servers will need to be upgraded before then.
If you pay a flat monthly fee for us to manage your computers, this upgrade is included and may have already happened. Otherwise, if this applies to you, please get in touch with us to schedule a server upgrade at your convenience.
For more information on Debian releases, check out the official Debian Releases page.