Index: /FCKeditor/trunk/_whatsnew.html
===================================================================
--- /FCKeditor/trunk/_whatsnew.html	(revision 2557)
+++ /FCKeditor/trunk/_whatsnew.html	(revision 2558)
@@ -47,4 +47,6 @@
 		Fixed Bugs:</p>
 	<ul>
+		<li>[<a target="_blank" href="http://dev.fckeditor.net/ticket/2381">#2381</a>] Protected the editor
+		from duplicate iframes</li>
 		<li>[<a target="_blank" href="http://dev.fckeditor.net/ticket/1752">#1752</a>] Fixed
 			the issue with Tablecommands plugin and undefined tagName.</li>
Index: /FCKeditor/trunk/fckeditor.js
===================================================================
--- /FCKeditor/trunk/fckeditor.js	(revision 2557)
+++ /FCKeditor/trunk/fckeditor.js	(revision 2558)
@@ -107,4 +107,6 @@
 FCKeditor.prototype.ReplaceTextarea = function()
 {
+	if ( document.getElementById( this.InstanceName + '___Frame' ) )
+		return ;
 	if ( !this.CheckBrowser || this._IsCompatibleBrowser() )
 	{