Package: libnx-x11 Version: 3.5.0.27 Server OS: Ubuntu 12.04.5 LTS I have a segfault crash when using some applications that use Qt inside X2GO. Looking in the bug list, i found a similar problem in ticket #410 The same links are missing and after manually creating then all applications runs fine. The missing links are: /usr/lib/nx/X11/Xinerama/libNX_X11.so.6 -> /usr/lib/x86_64-linux-gnu/libX11.so.6 /usr/lib/nx/X11/Xinerama/libNX_Xext.so.6 -> /usr/lib/x86_64-linux-gnu/libXext.so.6 I cant test it on the latest Ubuntu release (14.04) but i checked the package and the links are missing yet.