Ubuntu 12 - Where is the print screen dialogue?

http://askubuntu.com/questions/118573/where-is-the-print-screen-dialogue

If you use "Gnome classic"

sudo apt-get install gnome-panel
sudo apt-get install gnome-install

when you hit "Print screen", the screen flashes but no dialog. That's because the pictures are automatically saved in the "/home/user/Pictures" directory.

Hint: You can hold Shift+Ctrl+Print screen to save a region of interest.