Index: /CKEditor/trunk/CHANGES.html
===================================================================
--- /CKEditor/trunk/CHANGES.html	(revision 5580)
+++ /CKEditor/trunk/CHANGES.html	(revision 5581)
@@ -57,4 +57,5 @@
 		<li><a href="http://dev.fckeditor.net/ticket/5732">#5732</a> : If it isn't possible to connect to the SCAYT servers the dialogs might hang in Firefox. Fix for Firefox>=3.6.</li>
 		<li><a href="http://dev.fckeditor.net/ticket/5807">#5807</a> : [FF2] New page command results in uneditable document.</li>
+		<li><a href="http://dev.fckeditor.net/ticket/5807">#5807</a> : [FF2] SCAYT plugin is disabled in Firefox2 due to selection interference.</li>
 		<li><a href="http://dev.fckeditor.net/ticket/5772">#5772</a> : [IE] Some numbered list style types are not supported by IE6/7 and causes JavaScript error.</li>
 	</ul>
Index: /CKEditor/trunk/_source/plugins/scayt/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/scayt/plugin.js	(revision 5580)
+++ /CKEditor/trunk/_source/plugins/scayt/plugin.js	(revision 5581)
@@ -1,3 +1,3 @@
-/*
+/*
 Copyright (c) 2003-2010, CKSource - Frederico Knabben. All rights reserved.
 For licensing, see LICENSE.html or http://ckeditor.com/license
@@ -358,6 +358,6 @@
 		loadEngine : function( editor )
 		{
-			// SCAYT doesn't work with Opera.
-			if ( CKEDITOR.env.opera )
+			// SCAYT doesn't work with Firefox2, Opera.
+			if ( CKEDITOR.env.gecko && CKEDITOR.env.version >= 10900 || CKEDITOR.env.opera )
 				return editor.fire( 'showScaytState' );