You all really should have upgraded your X2Go servers to Debian squeeze…
For those who have not: we have just provided the latest releases of all server-side X2Go packages for Debian lenny. Such package backporting occurs in irregular intervals and is mostly related to some contractor who needs latest X2Go packages for not-yet upgraded servers.
Debian lenny backport packages:
deb http://packages.x2go.org/debian lenny main