Dear all
In accordance with CentOS's deprecation of version 5, all packages have been rebuilt one last time and moved to the package archive[0].
For more information refer to the Archived X2Go Packages for RedHat Enterprise Linux and Derivatives wiki page[1].
Mihai
[0] https://archives.packages.x2go.org/epel [1] http://wiki.x2go.org/doku.php/wiki:repositories:archives:epel