I followed the instructions in the Wiki and installed x2goserver-one on my Debian Lenny server. However, during the installation, it told me:
Attention: If you want to allow users to log into the x2go system, you'll need to add them to the "x2gousers" group
but then it went on all on its own and added all users (about 300) of the system to the "x2gousers" as well as "fuse" groups! How do I undo that? Right now, I need to click around for hours in the Users and Groups admin tool :-$