--- a/windows.rst	Sun Nov 14 10:51:53 2010 +0200
+++ b/windows.rst	Sun Nov 14 10:58:44 2010 +0200
@@ -342,6 +342,12 @@
 
   %Systemroot%\$NtServicePackUninstall$
 
+Also check such directories:
+
+  %SYSTEMDRIVE%\Program Files\Common Files
+  %SYSTEMDRIVE%\Documents and Settings\USER\Application Data
+  %SYSTEMDRIVE%\Documents and Settings\USER\Local Settings
+
   http://support.microsoft.com/kb/290402
                 HOW TO: Remove the Service Pack Restore Files and Folders in Windows