When clicking on a link to grade an assignment in the 1.9 gradebook, one can assign grades to the assignment, but it requires several mouseclicks to go back to the course page and then into the gradebook to see the results.

To fix, replace the line from mod\assignment.php

$navigation = build_navigation($this->strsubmissions, $this->cm);

to

$navigation = build_navigation(array(array('name'=>get_string('grades', 'grades'), 'link'=>"$CFG->wwwroot/grade/report/grader/index.php?id={$this->course->id}", 'type'=>'misc'),array('name'=>$this->strsubmissions, 'link'=>null, 'type'=>'misc')),$this->cm);

Now you can return to the gradebook with a single click, greatly increasing productivity.