$ diff -u tacacs+-F4.0.4.19_edit/expire.c tacacs+-F4.0.4.19/expire.c 
--- expire.c	2008-02-08 13:33:58.000000000 +0100
+++ tacacs+-F4.0.4.19/expire.c	2009-07-17 19:34:31.000000000 +0200
@@ -59,7 +59,7 @@
     monthstr[0] = '\0';
 
     /* If no date or a shell, let it pass.  (Backward compatibility.) */
-    if (!date || (strlen(date) == 0) || (*date == '/'))
+    if (!date || (strlen(date) == 0) || (*date == '/') || (*date == ':'))
 	return(PW_OK);
 
     /* Parse date string.  Fail it upon error. */