First, much thanks for this module and maintaining it.

In one place I'm using Webform Reports in a panel page, so I wanted to display only 5 results (eg top 5). I also wanted to be able to disable the number of rows returned, "(N results)" text at top left, as needed. Here are the changes I made to accomplish this, in case anyone is interested. Note I was working with 6.x-2.x-dev downloaded Oct 28, 2011, as I've not updated to the November 17, 2011 6.x-2.x-dev yet.

$ diff -u webform_report.install.orig webform_report.install
--- webform_report.install.orig 2011-12-16 14:05:21.000000000 -0500
+++ webform_report.install      2011-12-16 14:07:01.000000000 -0500
@@ -65,6 +65,7 @@
     }
     $options = array(
       'results_per_page' => $rpp, 
+      'hide_result_count' => FALSE,
       'hide_csv' => FALSE
     );
     if (!db_query("UPDATE {webform_report}

If the item below is accepted into the code, I don't expect the no results message to be displayed with the wording as shown in the change below. An option to define the message would be a better addition, I just didn't have time to add that ability in yet.

$ diff -u webform_report.inc.orig webform_report.inc
--- webform_report.inc.orig     2011-12-16 13:57:03.000000000 -0500
+++ webform_report.inc  2011-12-16 14:01:53.000000000 -0500
@@ -293,8 +293,10 @@
     }
     
     // Display number of rows after description.
-    $output .= filter_xss_admin($node->description) . 
-               ' (' . count($report['rows']) . ' ' . t('results') . ') ';
+    if (!$node->options['hide_result_count']) {
+      $output .= filter_xss_admin($node->description) . 
+                 ' (' . count($report['rows']) . ' ' . t('results') . ') ';
+    }
     if (!$node->options['hide_csv']) {
       $output .= l(t('Download as CSV'), 'node/' . arg(1) . '/csv') . '</p>';
     }
@@ -304,7 +306,10 @@
 
     // no submissions met criteria
     if (count($report['rows']) == 0) {
-      $output .= t('There are no submissions that match the criteria for the selected webform.');
+      // Original message
+      //$output .= t('There are no submissions that match the criteria for the selected webform.');
+      // Our message
+      $output .= t('No data meets requested criteria');
     }
   }

$ diff -u webform_report_criteria.inc.orig webform_report_criteria.inc
--- webform_report_criteria.inc.orig    2011-12-16 13:52:50.000000000 -0500
+++ webform_report_criteria.inc 2011-12-16 14:04:45.000000000 -0500
@@ -281,6 +281,8 @@
   
     $results_per_page_options = array(
       0 => 'All', 
+      5 => '5',
+      10 => '10',
       20 => '20', 
       40 => '40', 
       60 => '60', 
@@ -303,6 +305,14 @@
     );
 
     $default = FALSE;  
+    if (is_array($node->options) && array_key_exists('hide_result_count', $node->options)) {
+      $default = $node->options['hide_result_count'];
+    }
+    $form['options']['hide_result_count'] = array(
+      '#type' => 'checkbox',
+      '#title' => t('Hide results count information'),
+      '#default_value' => $default,
+    );
     if (is_array($node->options) && array_key_exists('hide_csv', $node->options)) {
       $default = $node->options['hide_csv'];
     }
@@ -936,6 +946,7 @@
 
   // update options
   $node->options['results_per_page'] = $form_state['values']['results_per_page'];
+  $node->options['hide_result_count'] = $form_state['values']['hide_result_count'];
   $node->options['hide_csv'] = $form_state['values']['hide_csv'];
   $node->options['search_form'] = $form_state['values']['search_form'];
   $node->options['layout'] = $form_state['values']['layout'];