FC6 FreeNX RDP and fonts

For the past few months I have been using FreeNX a lot for remote support of all kinds of server. I got so used to this tool and now I have a problem with it. After I have installed Fedora Core 6 on my laptop, the NXclient does not show any fonts/text in the remote window during the RDP sessions :(

I have checked everything I could, but still can not fix the problem, so if you have the same problem and you get a fix, please let me know, since my life is getting harder with no FreeNX :(