zoghal/CakeGrid — pull request #3 by mdeveloper20 (2013-06-08 18:17:11+00:00)
Title: fixed:send width of action column to View/Elements/table/grid_headers.ctp.

you can use width option to set width when addAction.
for example:
$this->Grid->addAction(__('Active'), array( 'controller' => 'users' , 'action' => 'activeclient' ), array("/User/id"),array('width' => '30%' ));
attention: all addAction method that used in your grid should have same width!