A Unique Python script called GimpBox released. It will convert your conventional gimp – 2.6.10 or eariler versions to the proposed single window mode gimp and Tabbed Files with screenshot. A great script to convert a GIMP to a more handy interface.
Requirements
* Gimp – 2.6.10 or earlier
Just run GimpBox script in a command line or a launcher then your conventional gimp will load into a single window mode.
Install GimpBox
Just download GimpBox from http://gimpbox.googlecode.com/hg/gimpbox.py and copy it into your local bin folder
In terminal
su -
wget http://gimpbox.googlecode.com/hg/gimpbox.py
mv gimpbox.py /usr/local/bin/gimpbox
chmod +x /usr/local/bin/gimpbox
That is all
Run Gimpbox From a Shortcut.
On Dekstop Right click > Create Launcher
Type : Application
Name: GimpBox
Command: /usr/local/bin/gimpbox
Comment : Gimp In Single Window
Then Press OK
A shortcut will be placed on Desktop.
This is working on fedora and ubuntu.
Double click on it. You will get new Gimp Single Window mode. And Tabbed Files. The problem is the Shortcuts are not working now.

wonderful. for years I avoided Gimp because of this one problem. thanks.