Index: src/applications/auth/controller/PhabricatorLogoutController.php
===================================================================
--- src/applications/auth/controller/PhabricatorLogoutController.php
+++ src/applications/auth/controller/PhabricatorLogoutController.php
@@ -23,9 +23,9 @@
 
     if ($request->isFormPost()) {
 
-      $log = PhabricatorUserLog::newLog(
-        $user,
+      $log = PhabricatorUserLog::initializeNewLog(
         $user,
+        $user->getPHID(),
         PhabricatorUserLog::ACTION_LOGOUT);
       $log->save();
 
Index: src/applications/auth/provider/PhabricatorAuthProviderPassword.php
===================================================================
--- src/applications/auth/provider/PhabricatorAuthProviderPassword.php
+++ src/applications/auth/provider/PhabricatorAuthProviderPassword.php
@@ -185,9 +185,9 @@
     }
 
     if (!$account) {
-      $log = PhabricatorUserLog::newLog(
+      $log = PhabricatorUserLog::initializeNewLog(
         null,
-        $log_user,
+        $log_user ? $log_user->getPHID() : null,
         PhabricatorUserLog::ACTION_LOGIN_FAILURE);
       $log->save();
 
Index: src/applications/people/controller/PhabricatorPeopleEditController.php
===================================================================
--- src/applications/people/controller/PhabricatorPeopleEditController.php
+++ src/applications/people/controller/PhabricatorPeopleEditController.php
@@ -356,9 +356,9 @@
 
     if ($request->isFormPost()) {
 
-      $log_template = PhabricatorUserLog::newLog(
+      $log_template = PhabricatorUserLog::initializeNewLog(
         $admin,
-        $user,
+        $user->getPHID(),
         null);
 
       $logs = array();
Index: src/applications/people/editor/PhabricatorUserEditor.php
===================================================================
--- src/applications/people/editor/PhabricatorUserEditor.php
+++ src/applications/people/editor/PhabricatorUserEditor.php
@@ -64,9 +64,9 @@
         throw $ex;
       }
 
-      $log = PhabricatorUserLog::newLog(
+      $log = PhabricatorUserLog::initializeNewLog(
         $this->requireActor(),
-        $user,
+        $user->getPHID(),
         PhabricatorUserLog::ACTION_CREATE);
       $log->setNewValue($email->getAddress());
       $log->save();
@@ -93,9 +93,9 @@
         $email->save();
       }
 
-      $log = PhabricatorUserLog::newLog(
+      $log = PhabricatorUserLog::initializeNewLog(
         $this->requireActor(),
-        $user,
+        $user->getPHID(),
         PhabricatorUserLog::ACTION_EDIT);
       $log->save();
 
@@ -122,9 +122,9 @@
       $user->setPassword($envelope);
       $user->save();
 
-      $log = PhabricatorUserLog::newLog(
+      $log = PhabricatorUserLog::initializeNewLog(
         $this->requireActor(),
-        $user,
+        $user->getPHID(),
         PhabricatorUserLog::ACTION_CHANGE_PASSWORD);
       $log->save();
 
@@ -161,9 +161,9 @@
         throw $ex;
       }
 
-      $log = PhabricatorUserLog::newLog(
+      $log = PhabricatorUserLog::initializeNewLog(
         $actor,
-        $user,
+        $user->getPHID(),
         PhabricatorUserLog::ACTION_CHANGE_USERNAME);
       $log->setOldValue($old_username);
       $log->setNewValue($username);
@@ -198,14 +198,14 @@
           return $this;
         }
 
-        $log = PhabricatorUserLog::newLog(
+        $log = PhabricatorUserLog::initializeNewLog(
           $actor,
-          $user,
+          $user->getPHID(),
           PhabricatorUserLog::ACTION_ADMIN);
         $log->setOldValue($user->getIsAdmin());
         $log->setNewValue($admin);
 
-        $user->setIsAdmin($admin);
+        $user->setIsAdmin((int)$admin);
         $user->save();
 
         $log->save();
@@ -236,9 +236,9 @@
           return $this;
         }
 
-        $log = PhabricatorUserLog::newLog(
+        $log = PhabricatorUserLog::initializeNewLog(
           $actor,
-          $user,
+          $user->getPHID(),
           PhabricatorUserLog::ACTION_SYSTEM_AGENT);
         $log->setOldValue($user->getIsSystemAgent());
         $log->setNewValue($system_agent);
@@ -275,14 +275,14 @@
           return $this;
         }
 
-        $log = PhabricatorUserLog::newLog(
+        $log = PhabricatorUserLog::initializeNewLog(
           $actor,
-          $user,
+          $user->getPHID(),
           PhabricatorUserLog::ACTION_DISABLE);
         $log->setOldValue($user->getIsDisabled());
         $log->setNewValue($disable);
 
-        $user->setIsDisabled($disable);
+        $user->setIsDisabled((int)$disable);
         $user->save();
 
         $log->save();
@@ -314,9 +314,9 @@
           return $this;
         }
 
-        $log = PhabricatorUserLog::newLog(
+        $log = PhabricatorUserLog::initializeNewLog(
           $actor,
-          $user,
+          $user->getPHID(),
           PhabricatorUserLog::ACTION_APPROVE);
         $log->setOldValue($user->getIsApproved());
         $log->setNewValue($approve);
@@ -382,9 +382,9 @@
         $email->delete();
       }
 
-      $log = PhabricatorUserLog::newLog(
+      $log = PhabricatorUserLog::initializeNewLog(
         $actor,
-        $user,
+        $user->getPHID(),
         PhabricatorUserLog::ACTION_DELETE);
       $log->save();
 
@@ -435,9 +435,9 @@
           throw $ex;
         }
 
-        $log = PhabricatorUserLog::newLog(
+        $log = PhabricatorUserLog::initializeNewLog(
           $actor,
-          $user,
+          $user->getPHID(),
           PhabricatorUserLog::ACTION_EMAIL_ADD);
         $log->setNewValue($email->getAddress());
         $log->save();
@@ -480,9 +480,9 @@
 
         $email->delete();
 
-        $log = PhabricatorUserLog::newLog(
+        $log = PhabricatorUserLog::initializeNewLog(
           $actor,
-          $user,
+          $user->getPHID(),
           PhabricatorUserLog::ACTION_EMAIL_REMOVE);
         $log->setOldValue($email->getAddress());
         $log->save();
@@ -536,9 +536,9 @@
         $email->setIsPrimary(1);
         $email->save();
 
-        $log = PhabricatorUserLog::newLog(
+        $log = PhabricatorUserLog::initialieNewLog(
           $actor,
-          $user,
+          $user->getPHID(),
           PhabricatorUserLog::ACTION_EMAIL_PRIMARY);
         $log->setOldValue($old_primary ? $old_primary->getAddress() : null);
         $log->setNewValue($email->getAddress());
Index: src/applications/people/storage/PhabricatorUser.php
===================================================================
--- src/applications/people/storage/PhabricatorUser.php
+++ src/applications/people/storage/PhabricatorUser.php
@@ -431,9 +431,9 @@
       }
     }
 
-    $log = PhabricatorUserLog::newLog(
-      $this,
+    $log = PhabricatorUserLog::initializeNewLog(
       $this,
+      $this->getPHID(),
       PhabricatorUserLog::ACTION_LOGIN);
     $log->setDetails(
       array(
Index: src/applications/people/storage/PhabricatorUserLog.php
===================================================================
--- src/applications/people/storage/PhabricatorUserLog.php
+++ src/applications/people/storage/PhabricatorUserLog.php
@@ -35,9 +35,9 @@
   protected $remoteAddr;
   protected $session;
 
-  public static function newLog(
+  public static function initializeNewLog(
     PhabricatorUser $actor = null,
-    PhabricatorUser $user = null,
+    $object_phid,
     $action) {
 
     $log = new PhabricatorUserLog();
@@ -46,15 +46,8 @@
       $log->setActorPHID($actor->getPHID());
     }
 
-    if ($user) {
-      $log->setUserPHID($user->getPHID());
-    } else {
-      $log->setUserPHID('');
-    }
-
-    if ($action) {
-      $log->setAction($action);
-    }
+    $log->setUserPHID((string)$object_phid);
+    $log->setAction($action);
 
     return $log;
   }