Seems they were planning on doing something with the title bar so made it frigging HUGE! This might be ok on a 22" monitor but netbooks this will be an issue. Most of the space is controlled in the main theme XML file. So to make much much smaller run:
- Open a terminal window
- sudo sed -i "/title_vertical_pad/s/value=\"[0-9]\{1,2\}\"/value=\"0\"/g" /usr/share/themes/Adwaita/metacity-1/metacity-theme-3.xml
- Close terminal window
- Hit ALT-F2
- type restart or r
- hit enter
Finally, Feeling :)
(Ref: http://mikeyshelpdesk.blogspot.com/2011/04/gnome-3-massive-title-bar.html)