Bart Dorlandt - BAMweb.nl

I just try to find the xnest button in Applications -> system tools. But unfortunatly it wasn't there anymore. I have made sure I had installed Xnest ofcourse.

sudo apt-get install xnest

So after checking an older ubuntu version (6.04), I found out it was the command

gdmflexiserver --xnest

So by adding that manually to the menu, by clicking right mouse on applications and selecting edit menu, it works again. :)