C:\captcha>"C:\Program Files\CVSNT\cvs.exe" -z6 -d:pserver:anonymous:anonymous@cvs.drupal.org:/cvs/drupal-contrib diff -up contributions/modules/captcha 
Index: contributions/modules/captcha/image_captcha/image_captcha.admin.inc
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/captcha/image_captcha/image_captcha.admin.inc,v
retrieving revision 1.8
diff -u -p -r1.8 image_captcha.admin.inc
--- contributions/modules/captcha/image_captcha/image_captcha.admin.inc	28 Apr 2008 10:03:00 -0000	1.8
+++ contributions/modules/captcha/image_captcha/image_captcha.admin.inc	15 May 2008 02:01:37 -0000
@@ -42,7 +42,14 @@ function image_captcha_settings_form() {
     '#default_value' => (int) variable_get('image_captcha_code_length', 5),
     '#description' => t('The code length influences the size of the image. Note that larger values make the image generation more CPU intensive.'),
   );
-
+  // remove case sensitivity from test to make it easier to pass captcha
+  $form['image_captcha_code_settings']['captcha_ignore_case_sensitivity'] = array(
+    '#type' => 'checkbox',
+	'#title' => t('Ignore case sensitivity'),
+	'#description' => t('Ignore the user\'s case sensitivity in their answer. This will make it easier for users to pass CAPTCHA.'),
+	'#default_value' => variable_get('captcha_ignore_case_sensitivity', FALSE),
+  );
+  
   // font related stuff
   $form['image_captcha_font_settings'] = array(
     '#type' => 'fieldset',
Index: contributions/modules/captcha/image_captcha/image_captcha.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/captcha/image_captcha/image_captcha.module,v
retrieving revision 1.14
diff -u -p -r1.14 image_captcha.module
--- contributions/modules/captcha/image_captcha/image_captcha.module	7 Apr 2008 21:35:18 -0000	1.14
+++ contributions/modules/captcha/image_captcha/image_captcha.module	13 May 2008 04:01:13 -0000
@@ -102,7 +102,7 @@ function _image_captcha_utf8_split($str)
 /**
  * Implementation of hook_captcha
  */
-function image_captcha_captcha($op, $captcha_type='') {
+function image_captcha_captcha($op, $captcha_type='', $response='') {
   switch ($op) {
     case 'list':
       // only offer image CAPTCHA if possible to generate an image CAPTCHA
@@ -129,8 +129,26 @@ function image_captcha_captcha($op, $cap
         for ($i = 0; $i < $code_length; $i++) {
           $code .= $allowed_chars[array_rand($allowed_chars)];
         }
+		
+		// check for case sensitivity
+		if (variable_get('captcha_ignore_case_sensitivity')) {
+          // the operator has requested the test be insensitive
+          // set the test to all lower case characters
+          $code = strtolower($code);
+		  // set a hook for the preprocessor so that the response
+		  // from the user will also be set to lower case
+          $captcha['preprocess'] = TRUE;
+		}
+		else
+		{
+		  // reset preprocessor to FALSE 
+		  // just in case things change at runtime
+		  $captcha['preprocess'] = FALSE;
+		}
+		  
         // store the answer in $_SESSION for the image generator function (which happens in another http request)
         $seed = mt_rand();
+		
         $_SESSION['image_captcha'][$seed] = $code;
         // build the result to return
         $result = array();
@@ -150,6 +168,13 @@ function image_captcha_captcha($op, $cap
         );
         return $result;
       }
+    case 'preprocess':
+      // this hook should only be enabled if the operator
+      // has selected case insensitivity. 
+      // it is enabled in the generate process above	  
+      if ($capcha_type == 'Image') {
+        return strtolower($response);
+      }	
     break;
   }
 }