I'm running ubuntu 12.04 with gimp 2.6.12

The problem I face is that the unity header bar at the top of the screen covers the gimp toolbox meaning that the tool box cannot be moved, or closed.

The second issue that the header bar (the one that shows file, edit, view etc.. along with the time and other notifications) doesn't become active when clicking on the tool box.

The third issue that when loaded gimp doesn't show up in the unity left hand menu.