Index: wp-admin/includes/media.php
===================================================================
--- wp-admin/includes/media.php	(revision 7394)
+++ wp-admin/includes/media.php	(working copy)
@@ -778,6 +778,12 @@
 
 	$flash_action_url = get_option('siteurl') . "/wp-admin/async-upload.php";
 
+	// If Mac and mod_security, no Flash. :(
+	if ( false !== strpos(strtolower($_SERVER['HTTP_USER_AGENT']), 'mac') && 'on' == strtolower(apache_getenv('MODSEC_ENABLE')) )
+		$flash = false;
+	else
+		$flash = true;
+
 	$post_id = intval($_REQUEST['post_id']);
 
 ?>
@@ -787,6 +793,7 @@
 	<?php echo $errors['upload_error']->get_error_message(); ?>
 <?php } ?>
 </div>
+<?php if ( $flash ) : ?>
 <script type="text/javascript">
 <!--
 jQuery(function($){
@@ -828,6 +835,8 @@
 	<p><?php _e('After a file has been uploaded, you can add titles and descriptions.'); ?></p>
 </div>
 
+<?php endif; // $flash ?>
+
 <div id="html-upload-ui">
 	<p>
 	<input type="file" name="async-upload" id="async-upload" /> <input type="submit" class="button" value="<?php echo attribute_escape(__('Upload')); ?>" /> <a href="#" onClick="return top.tb_remove();"><?php _e('Cancel'); ?></a>