Index: lams_common/src/java/org/lamsfoundation/lams/integration/security/Authenticator.java
===================================================================
RCS file: /usr/local/cvsroot/lams_common/src/java/org/lamsfoundation/lams/integration/security/Authenticator.java,v
diff -u -r1.8 -r1.9
--- lams_common/src/java/org/lamsfoundation/lams/integration/security/Authenticator.java	3 Dec 2014 20:38:12 -0000	1.8
+++ lams_common/src/java/org/lamsfoundation/lams/integration/security/Authenticator.java	5 Dec 2014 15:28:40 -0000	1.9
@@ -98,8 +98,9 @@
 	    int timeToLiveLoginRequest = map.getTimeToLiveLoginRequest();
 	    // sum up request time and maximum allowed request's time to live
 	    Date requestTimePlusTimeToLive = new Date(datetimeParam + timeToLiveLoginRequest * 60 * 1000);
+	    Date requestTimeMinusTimeToLive = new Date(datetimeParam - timeToLiveLoginRequest * 60 * 1000);
 	    Date now = new Date();
-	    if (requestTimePlusTimeToLive.before(now)) {
+	    if (requestTimePlusTimeToLive.before(now) || requestTimeMinusTimeToLive.after(now)) {
 		throw new AuthenticationException("Login Request can't be older than " + timeToLiveLoginRequest
 			+ " minutes. Please, refresh your previous page and try again.");
 	    }