Index: wp-login.php
===================================================================
--- wp-login.php	(revision 6166)
+++ wp-login.php	(working copy)
@@ -22,6 +22,7 @@
 
 //Set a cookie now to see if they are supported by the browser.
 setcookie(TEST_COOKIE, 'WP Cookie check', 0, COOKIEPATH, COOKIE_DOMAIN);
+setcookie(TEST_COOKIE, 'WP Cookie check', 0, SITECOOKIEPATH, COOKIE_DOMAIN);
 
 // Rather than duplicating this HTML all over the place, we'll stick it in function
 function login_header($title = 'Login', $message = '') {