Console applications are showing no outout on Ubuntu

Hey,
if you create a new console application in qt creator, you can't see any output of the script. No matter if you run it in debug mode or in the release mode. As long as you start the programm from qt creator there is no output at all.

If you start the script ourside of qt creator, it works fine.

I am on Ubuntu 12.04.

Greetings
Leo