So, I have found that the 2.0 Free Edition NX Server from nomachine supports "Starting a new session or resuming an existing session by SSH -X ", which would be interesting (especially the resume part). But unfortunately I was not intelligent enough to make it working (nxserver is working since normal nxclient connects). Is anyone interested and skilled enough to give it a try and maybe could then share his experiences?
rpms' and debs' for debian, suse, redhat, fedora etc. are on the nomachine website, remember to install nxclient, nxnode and nxserver.
Here is the link to example commands:
http://www.nomachine.com/ar/view.php?ar_id=AR04D00380

Bye and good luck, tira.