Index: grade/report/grader/lib.php
===================================================================
--- grade/report/grader/lib.php	(revision 247)
+++ grade/report/grader/lib.php	(working copy)
@@ -975,7 +975,7 @@
             for ($i = 0; $i < $levels; $i++) {
                 $studentshtml .= '
                         <tr class="heading name_row">
-                            <td '.$colspan.' class="fixedcolumn cell c0 topleft"> </td>
+                            <td '.$colspan.' class="fixedcolumn cell c0 topleft">&nbsp;</td>
                         </tr>
                         ';
             }






Index: grade/report/grader/styles.php
===================================================================
--- grade/report/grader/styles.php	(revision 247)
+++ grade/report/grader/styles.php	(working copy)
@@ -139,12 +139,14 @@
 border-width:0 1px;
 }
 
+/*  we don't want 25px height - at all
 .grade-report-grader table#user-grades th.category,
 .grade-report-grader table#user-grades th.item,
 .grade-report-grader table#user-grades th.categoryitem,
 .grade-report-grader table#user-grades th.courseitem {
 height: 25px;
 }
+*/
 
 .grade-report-grader td,.grade-report-grader th {
 border-color:#CECECE;