Index: /CKEditor/trunk/_source/plugins/enterkey/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/enterkey/plugin.js	(revision 7662)
+++ /CKEditor/trunk/_source/plugins/enterkey/plugin.js	(revision 7663)
@@ -316,7 +316,7 @@
 				isPre = ( startBlockTag == 'pre' );
 
-				// Gecko prefers <br> as line-break inside <pre> (#4711).
-				if ( isPre && !CKEDITOR.env.gecko )
-					lineBreak = doc.createText( CKEDITOR.env.ie ? '\r' : '\n' );
+				// IE<8 prefers text node as line-break inside of <pre> (#4711).
+				if ( startBlockTag == 'pre' && CKEDITOR.env.ie && CKEDITOR.env.version < 8 )
+					lineBreak = doc.createText( '\r' );
 				else
 					lineBreak = doc.createElement( 'br' );