Index: branches/5.2.x/core/install/install_schema.sql
===================================================================
diff -u -N -r16754 -r16770
--- branches/5.2.x/core/install/install_schema.sql	(.../install_schema.sql)	(revision 16754)
+++ branches/5.2.x/core/install/install_schema.sql	(.../install_schema.sql)	(revision 16770)
@@ -1282,15 +1282,20 @@
 );
 
 CREATE TABLE Semaphores (
-  SemaphoreId int(11) NOT NULL AUTO_INCREMENT,
-  SessionKey int(10) unsigned NOT NULL DEFAULT '0',
+  `SemaphoreId` int(11) NOT NULL AUTO_INCREMENT,
+  `SessionKey` int(10) unsigned NOT NULL DEFAULT '0',
   `Timestamp` int(10) unsigned NOT NULL DEFAULT '0',
-  MainPrefix varchar(255) NOT NULL DEFAULT '',
-  MainIDs text,
-  PRIMARY KEY (SemaphoreId),
-  KEY SessionKey (SessionKey),
+  `MainPrefix` varchar(255) NOT NULL DEFAULT '',
+  `MainIDs` text,
+  `UserId` int(11) DEFAULT NULL,
+  `IpAddress` varchar(15) NOT NULL DEFAULT '',
+  `Hostname` varchar(255) NOT NULL DEFAULT '',
+  `RequestURI` varchar(255) NOT NULL DEFAULT '',
+  `Backtrace` longtext,
+  PRIMARY KEY (`SemaphoreId`),
+  KEY `SessionKey` (`SessionKey`),
   KEY `Timestamp` (`Timestamp`),
-  KEY MainPrefix (MainPrefix)
+  KEY `MainPrefix` (`MainPrefix`)
 );
 
 CREATE TABLE CachedUrls (