replacing get_site() in add_to_log() for efficiency. Moodle 1.5 will have this done more thoroughly.

lib/datalib.php

@@ -2279,8 +2279,7 @@ function add_to_log($courseid, $module, $action, $url="", $info="", $cm=0, $user
         echo "<P>Error: Could not insert a new entry to the Moodle log</P>";  // Don't throw an error
     }    
     if (!$user and isset($USER->id)) {
-        $site = get_site();
-        if ($courseid == $site->id) {
+        if ($courseid == 1) {
             update_user_in_db();
         } else if (isstudent($courseid)) {
             $db->Execute("UPDATE {$CFG->prefix}user_students SET timeaccess = '$timenow' ".