To be precise it's not quite FreeNX. This patched FreeNX, called the RX from the company etersoft. Tomorrow I will try to update and test.
-- Yours truly, Sergey Savko.
----- Исходное сообщение ----- От: "Ulrich Sibiller" <uli42@gmx.de> Кому: "Sergey Savko" <savko@tophouse.ru> Отправленные: Четверг, 12 Февраль 2015 г 0:34:29 Тема: Re: [X2Go-Dev] Bug#785: Bug#785: x2go clipboard bug
So then try a newer x2go version. You should ensure that nx-libs is 3.5.0.28.
Regarding FreeNX: I am pretty sure nx 3.4.0 did not have that clipboard problem I fixed in 3.5.0.28.
Uli