Gedit indent (CTRL+T) plugin missing
Binary package hint: gedit
In gedit under Karmic, I used to have CTRL+T to indent (Ctrl+shift+t to revert) and Ctrl+m to comment (ctrl+shift+m to uncomment).
Since the Lucid upgrade, the indent feature has disappeared (but the comment is still there).
Those features are provided with plugins, it looks like one plugin is missing.