I doubt they will help much but here they are:
http://i.imgur.com/syHOP8S.png http://i.imgur.com/fhCvl9I.png http://i.imgur.com/NY5hATx.png
-- Aki
P.S. It is very nice that you're actively developing x2go. We're using freenx but I think its development has ended.
I noticed that even if I set the Settings/Display to (X) Maximum available, the setting was automatically changed to (x) Custom Width: 1366 Height 768 after logout. 1366x768 is my laptop's maximum resolution.
-- Aki