diff --git a/db/triggers.sql b/db/triggers.sql
index fb7a32b67..87c8465b4 100644
--- a/db/triggers.sql
+++ b/db/triggers.sql
@@ -4,7 +4,7 @@ DROP TRIGGER IF EXISTS Events_Hour_delete_trigger//
 CREATE TRIGGER Events_Hour_delete_trigger BEFORE DELETE ON Events_Hour
 FOR EACH ROW BEGIN
   UPDATE Monitors SET
-  HourEvents = COALESCE(HourEvents,1)-1,
+  HourEvents = GREATEST(COALESCE(HourEvents,1)-1,0),
   HourEventDiskSpace=GREATEST(COALESCE(HourEventDiskSpace,0)-COALESCE(OLD.DiskSpace,0),0)
   WHERE Id=OLD.MonitorId;
 END; 
@@ -62,7 +62,7 @@ DROP TRIGGER IF EXISTS Events_Week_delete_trigger//
 CREATE TRIGGER Events_Week_delete_trigger BEFORE DELETE ON Events_Week
 FOR EACH ROW BEGIN
   UPDATE Monitors SET
-  WeekEvents = COALESCE(WeekEvents,1)-1,
+  WeekEvents = GREATEST(COALESCE(WeekEvents,1)-1,0),
   WeekEventDiskSpace=GREATEST(COALESCE(WeekEventDiskSpace,0)-COALESCE(OLD.DiskSpace,0),0)
   WHERE Id=OLD.MonitorId;
 END;
@@ -90,7 +90,7 @@ DROP TRIGGER IF EXISTS Events_Month_delete_trigger//
 CREATE TRIGGER Events_Month_delete_trigger BEFORE DELETE ON Events_Month
 FOR EACH ROW BEGIN
   UPDATE Monitors SET
-  MonthEvents = COALESCE(MonthEvents,1)-1,
+  MonthEvents = GREATEST(COALESCE(MonthEvents,1)-1,0),
   MonthEventDiskSpace=GREATEST(COALESCE(MonthEventDiskSpace,0)-COALESCE(OLD.DiskSpace,0),0)
   WHERE Id=OLD.MonitorId;
 END;
diff --git a/db/zm_update-1.33.8.sql b/db/zm_update-1.33.8.sql
new file mode 100644
index 000000000..a3fed9629
--- /dev/null
+++ b/db/zm_update-1.33.8.sql
@@ -0,0 +1,283 @@
+
+delimiter //
+DROP TRIGGER IF EXISTS Events_Hour_delete_trigger//
+CREATE TRIGGER Events_Hour_delete_trigger BEFORE DELETE ON Events_Hour
+FOR EACH ROW BEGIN
+  UPDATE Monitors SET
+  HourEvents = GREATEST(COALESCE(HourEvents,1)-1,0),
+  HourEventDiskSpace=GREATEST(COALESCE(HourEventDiskSpace,0)-COALESCE(OLD.DiskSpace,0),0)
+  WHERE Id=OLD.MonitorId;
+END; 
+//
+
+DROP TRIGGER IF EXISTS Events_Hour_update_trigger//
+
+CREATE TRIGGER Events_Hour_update_trigger AFTER UPDATE ON Events_Hour
+FOR EACH ROW
+  BEGIN
+    declare diff BIGINT default 0;
+
+    set diff = COALESCE(NEW.DiskSpace,0) - COALESCE(OLD.DiskSpace,0);
+    IF ( diff ) THEN
+      IF ( NEW.MonitorID != OLD.MonitorID ) THEN
+        UPDATE Monitors SET HourEventDiskSpace=GREATEST(COALESCE(HourEventDiskSpace,0)-COALESCE(OLD.DiskSpace,0),0) WHERE Monitors.Id=OLD.MonitorId;
+        UPDATE Monitors SET HourEventDiskSpace=COALESCE(HourEventDiskSpace,0)+COALESCE(NEW.DiskSpace,0) WHERE Monitors.Id=NEW.MonitorId;
+      ELSE
+        UPDATE Monitors SET HourEventDiskSpace=COALESCE(HourEventDiskSpace,0)+diff WHERE Monitors.Id=NEW.MonitorId;
+      END IF;
+    END IF;
+  END;
+//
+
+DROP TRIGGER IF EXISTS Events_Day_delete_trigger//
+CREATE TRIGGER Events_Day_delete_trigger BEFORE DELETE ON Events_Day
+FOR EACH ROW BEGIN
+  UPDATE Monitors SET
+  DayEvents = GREATEST(COALESCE(DayEvents,1)-1,0),
+  DayEventDiskSpace=GREATEST(COALESCE(DayEventDiskSpace,0)-COALESCE(OLD.DiskSpace,0),0)
+  WHERE Id=OLD.MonitorId;
+END;
+//
+
+DROP TRIGGER IF EXISTS Events_Day_update_trigger;
+CREATE TRIGGER Events_Day_update_trigger AFTER UPDATE ON Events_Day
+FOR EACH ROW
+  BEGIN
+    declare diff BIGINT default 0;
+
+    set diff = COALESCE(NEW.DiskSpace,0) - COALESCE(OLD.DiskSpace,0);
+    IF ( diff ) THEN
+      IF ( NEW.MonitorID != OLD.MonitorID ) THEN
+        UPDATE Monitors SET DayEventDiskSpace=GREATEST(COALESCE(DayEventDiskSpace,0)-COALESCE(OLD.DiskSpace,0),0) WHERE Monitors.Id=OLD.MonitorId;
+        UPDATE Monitors SET DayEventDiskSpace=COALESCE(DayEventDiskSpace,0)+COALESCE(NEW.DiskSpace,0) WHERE Monitors.Id=NEW.MonitorId;
+      ELSE
+        UPDATE Monitors SET DayEventDiskSpace=GREATEST(COALESCE(DayEventDiskSpace,0)+diff,0) WHERE Monitors.Id=NEW.MonitorId;
+      END IF;
+    END IF;
+  END;
+  //
+
+
+DROP TRIGGER IF EXISTS Events_Week_delete_trigger//
+CREATE TRIGGER Events_Week_delete_trigger BEFORE DELETE ON Events_Week
+FOR EACH ROW BEGIN
+  UPDATE Monitors SET
+  WeekEvents = GREATEST(COALESCE(WeekEvents,1)-1,0),
+  WeekEventDiskSpace=GREATEST(COALESCE(WeekEventDiskSpace,0)-COALESCE(OLD.DiskSpace,0),0)
+  WHERE Id=OLD.MonitorId;
+END;
+//
+
+DROP TRIGGER IF EXISTS Events_Week_update_trigger;
+CREATE TRIGGER Events_Week_update_trigger AFTER UPDATE ON Events_Week
+FOR EACH ROW
+  BEGIN
+    declare diff BIGINT default 0;
+
+    set diff = COALESCE(NEW.DiskSpace,0) - COALESCE(OLD.DiskSpace,0);
+    IF ( diff ) THEN
+      IF ( NEW.MonitorID != OLD.MonitorID ) THEN
+        UPDATE Monitors SET WeekEventDiskSpace=GREATEST(COALESCE(WeekEventDiskSpace,0)-COALESCE(OLD.DiskSpace,0),0) WHERE Monitors.Id=OLD.MonitorId;
+        UPDATE Monitors SET WeekEventDiskSpace=COALESCE(WeekEventDiskSpace,0)+COALESCE(NEW.DiskSpace,0) WHERE Monitors.Id=NEW.MonitorId;
+      ELSE
+        UPDATE Monitors SET WeekEventDiskSpace=GREATEST(COALESCE(WeekEventDiskSpace,0)+diff,0) WHERE Monitors.Id=NEW.MonitorId;
+      END IF;
+    END IF;
+  END;
+  //
+
+DROP TRIGGER IF EXISTS Events_Month_delete_trigger//
+CREATE TRIGGER Events_Month_delete_trigger BEFORE DELETE ON Events_Month
+FOR EACH ROW BEGIN
+  UPDATE Monitors SET
+  MonthEvents = GREATEST(COALESCE(MonthEvents,1)-1,0),
+  MonthEventDiskSpace=GREATEST(COALESCE(MonthEventDiskSpace,0)-COALESCE(OLD.DiskSpace,0),0)
+  WHERE Id=OLD.MonitorId;
+END;
+//
+
+DROP TRIGGER IF EXISTS Events_Month_update_trigger;
+CREATE TRIGGER Events_Month_update_trigger AFTER UPDATE ON Events_Month
+FOR EACH ROW
+  BEGIN
+    declare diff BIGINT default 0;
+
+    set diff = COALESCE(NEW.DiskSpace,0) - COALESCE(OLD.DiskSpace,0);
+    IF ( diff ) THEN
+      IF ( NEW.MonitorID != OLD.MonitorID ) THEN
+        UPDATE Monitors SET MonthEventDiskSpace=GREATEST(COALESCE(MonthEventDiskSpace,0)-COALESCE(OLD.DiskSpace),0) WHERE Monitors.Id=OLD.MonitorId;
+        UPDATE Monitors SET MonthEventDiskSpace=COALESCE(MonthEventDiskSpace,0)+COALESCE(NEW.DiskSpace) WHERE Monitors.Id=NEW.MonitorId;
+      ELSE
+        UPDATE Monitors SET MonthEventDiskSpace=GREATEST(COALESCE(MonthEventDiskSpace,0)+diff,0) WHERE Monitors.Id=NEW.MonitorId;
+      END IF;
+    END IF;
+  END;
+  //
+
+drop procedure if exists update_storage_stats//
+
+drop trigger if exists event_update_trigger//
+
+CREATE TRIGGER event_update_trigger AFTER UPDATE ON Events 
+FOR EACH ROW
+BEGIN
+  declare diff BIGINT default 0;
+
+  set diff = COALESCE(NEW.DiskSpace,0) - COALESCE(OLD.DiskSpace,0);
+  IF ( NEW.StorageId = OLD.StorageID ) THEN
+    IF ( diff ) THEN
+      UPDATE Storage SET DiskSpace = GREATEST(COALESCE(DiskSpace,0) + diff,0) WHERE Id = OLD.StorageId;
+    END IF;
+  ELSE
+    IF ( NEW.DiskSpace ) THEN
+      UPDATE Storage SET DiskSpace = COALESCE(DiskSpace,0) + NEW.DiskSpace WHERE Id = NEW.StorageId;
+    END IF;
+    IF ( OLD.DiskSpace ) THEN
+      UPDATE Storage SET DiskSpace = GREATEST(COALESCE(DiskSpace,0) - OLD.DiskSpace,0) WHERE Id = OLD.StorageId;
+    END IF;
+  END IF;
+
+  UPDATE Events_Hour SET DiskSpace=NEW.DiskSpace WHERE EventId=NEW.Id;
+  UPDATE Events_Day SET DiskSpace=NEW.DiskSpace WHERE EventId=NEW.Id;
+  UPDATE Events_Week SET DiskSpace=NEW.DiskSpace WHERE EventId=NEW.Id;
+  UPDATE Events_Month SET DiskSpace=NEW.DiskSpace WHERE EventId=NEW.Id;
+
+  IF ( NEW.Archived != OLD.Archived ) THEN
+    IF ( NEW.Archived ) THEN
+      INSERT INTO Events_Archived (EventId,MonitorId,DiskSpace) VALUES (NEW.Id,NEW.MonitorId,NEW.DiskSpace);
+      UPDATE Monitors SET ArchivedEvents = COALESCE(ArchivedEvents,0)+1, ArchivedEventDiskSpace = COALESCE(ArchivedEventDiskSpace,0) + COALESCE(NEW.DiskSpace,0) WHERE Id=NEW.MonitorId;
+    ELSEIF ( OLD.Archived ) THEN
+      DELETE FROM Events_Archived WHERE EventId=OLD.Id;
+      UPDATE Monitors
+        SET
+          ArchivedEvents = GREATEST(COALESCE(ArchivedEvents,0)-1,0),
+          ArchivedEventDiskSpace = GREATEST(COALESCE(ArchivedEventDiskSpace,0) - COALESCE(OLD.DiskSpace,0),0)
+        WHERE Id=OLD.MonitorId;
+    ELSE
+      IF ( OLD.DiskSpace != NEW.DiskSpace ) THEN
+        UPDATE Events_Archived SET DiskSpace=NEW.DiskSpace WHERE EventId=NEW.Id;
+        UPDATE Monitors SET
+          ArchivedEventDiskSpace = GREATEST(COALESCE(ArchivedEventDiskSpace,0) - COALESCE(OLD.DiskSpace,0) + COALESCE(NEW.DiskSpace,0),0)
+          WHERE Id=OLD.MonitorId;
+      END IF;
+    END IF;
+  ELSEIF ( NEW.Archived AND diff ) THEN
+    UPDATE Events_Archived SET DiskSpace=NEW.DiskSpace WHERE EventId=NEW.Id;
+  END IF;
+
+  IF ( diff ) THEN
+    UPDATE Monitors
+      SET
+        TotalEventDiskSpace = GREATEST(COALESCE(TotalEventDiskSpace,0) - COALESCE(OLD.DiskSpace,0) + COALESCE(NEW.DiskSpace,0),0)
+      WHERE Id=OLD.MonitorId;
+  END IF;
+
+END;
+
+//
+
+DROP TRIGGER IF EXISTS event_insert_trigger//
+
+/* The assumption is that when an Event is inserted, it has no size yet, so don't bother updating the DiskSpace, just the count.
+ * The DiskSpace will get update in the Event Update Trigger
+ */
+CREATE TRIGGER event_insert_trigger AFTER INSERT ON Events
+FOR EACH ROW
+  BEGIN
+
+  INSERT INTO Events_Hour (EventId,MonitorId,StartTime,DiskSpace) VALUES (NEW.Id,NEW.MonitorId,NEW.StartTime,0);
+  INSERT INTO Events_Day (EventId,MonitorId,StartTime,DiskSpace) VALUES (NEW.Id,NEW.MonitorId,NEW.StartTime,0);
+  INSERT INTO Events_Week (EventId,MonitorId,StartTime,DiskSpace) VALUES (NEW.Id,NEW.MonitorId,NEW.StartTime,0);
+  INSERT INTO Events_Month (EventId,MonitorId,StartTime,DiskSpace) VALUES (NEW.Id,NEW.MonitorId,NEW.StartTime,0);
+  UPDATE Monitors SET
+  HourEvents = COALESCE(HourEvents,0)+1,
+  DayEvents = COALESCE(DayEvents,0)+1,
+  WeekEvents = COALESCE(WeekEvents,0)+1,
+  MonthEvents = COALESCE(MonthEvents,0)+1,
+  TotalEvents = COALESCE(TotalEvents,0)+1
+  WHERE Id=NEW.MonitorId;
+END;
+//
+
+DROP TRIGGER IF EXISTS event_delete_trigger//
+
+CREATE TRIGGER event_delete_trigger BEFORE DELETE ON Events
+FOR EACH ROW
+BEGIN
+  IF ( OLD.DiskSpace ) THEN
+    UPDATE Storage SET DiskSpace = GREATEST(COALESCE(DiskSpace,0) - COALESCE(OLD.DiskSpace,0),0) WHERE Id = OLD.StorageId;
+  END IF;
+  DELETE FROM Events_Hour WHERE EventId=OLD.Id;
+  DELETE FROM Events_Day WHERE EventId=OLD.Id;
+  DELETE FROM Events_Week WHERE EventId=OLD.Id;
+  DELETE FROM Events_Month WHERE EventId=OLD.Id;
+  IF ( OLD.Archived ) THEN
+    DELETE FROM Events_Archived WHERE EventId=OLD.Id;
+    UPDATE Monitors SET
+      ArchivedEvents = GREATEST(COALESCE(ArchivedEvents,1) - 1,0),
+      ArchivedEventDiskSpace = GREATEST(COALESCE(ArchivedEventDiskSpace,0) - COALESCE(OLD.DiskSpace,0),0),
+      TotalEvents = GREATEST(COALESCE(TotalEvents,1) - 1,0),
+      TotalEventDiskSpace = GREATEST(COALESCE(TotalEventDiskSpace,0) - COALESCE(OLD.DiskSpace,0),0)
+      WHERE Id=OLD.MonitorId;
+  ELSE
+    UPDATE Monitors SET
+    TotalEvents = GREATEST(COALESCE(TotalEvents,1)-1,0),
+    TotalEventDiskSpace=GREATEST(COALESCE(TotalEventDiskSpace,0)-COALESCE(OLD.DiskSpace,0),0)
+    WHERE Id=OLD.MonitorId;
+  END IF;
+END;
+
+//
+
+DROP TRIGGER IF EXISTS Zone_Insert_Trigger//
+CREATE TRIGGER Zone_Insert_Trigger AFTER INSERT ON Zones
+FOR EACH ROW
+  BEGIN
+    UPDATE Monitors SET ZoneCount=(SELECT COUNT(*) FROM Zones WHERE MonitorId=NEW.MonitorId) WHERE Id=NEW.MonitorID;
+  END
+//
+DROP TRIGGER IF EXISTS Zone_Delete_Trigger//
+CREATE TRIGGER Zone_Delete_Trigger AFTER DELETE ON Zones
+FOR EACH ROW
+  BEGIN
+    UPDATE Monitors SET ZoneCount=(SELECT COUNT(*) FROM Zones WHERE MonitorId=OLD.MonitorId) WHERE Id=OLD.MonitorID;
+  END
+//
+
+DELIMITER ;
+
+REPLACE INTO Events_Hour SELECT Id,MonitorId,StartTime,DiskSpace FROM Events WHERE StartTime > DATE_SUB(NOW(),  INTERVAL 1 hour);
+REPLACE INTO Events_Day SELECT Id,MonitorId,StartTime,DiskSpace FROM Events WHERE StartTime > DATE_SUB(NOW(),  INTERVAL 1 day);
+REPLACE INTO Events_Week SELECT Id,MonitorId,StartTime,DiskSpace FROM Events WHERE StartTime > DATE_SUB(NOW(),  INTERVAL 1 week);
+REPLACE INTO Events_Month SELECT Id,MonitorId,StartTime,DiskSpace FROM Events WHERE StartTime > DATE_SUB(NOW(),  INTERVAL 1 month);
+REPLACE INTO Events_Archived SELECT Id,MonitorId,DiskSpace FROM Events WHERE Archived=1;
+
+UPDATE Monitors INNER JOIN (
+  SELECT  MonitorId,
+    COUNT(Id) AS TotalEvents,
+    SUM(DiskSpace) AS TotalEventDiskSpace,
+    SUM(IF(Archived,1,0)) AS ArchivedEvents,
+    SUM(IF(Archived,DiskSpace,0)) AS ArchivedEventDiskSpace,
+    SUM(IF(StartTime > DATE_SUB(NOW(), INTERVAL 1 hour),1,0)) AS HourEvents,
+    SUM(IF(StartTime > DATE_SUB(NOW(), INTERVAL 1 hour),DiskSpace,0)) AS HourEventDiskSpace,
+    SUM(IF(StartTime > DATE_SUB(NOW(), INTERVAL 1 day),1,0)) AS DayEvents,
+    SUM(IF(StartTime > DATE_SUB(NOW(), INTERVAL 1 day),DiskSpace,0)) AS DayEventDiskSpace,
+    SUM(IF(StartTime > DATE_SUB(NOW(), INTERVAL 1 week),1,0)) AS WeekEvents,
+    SUM(IF(StartTime > DATE_SUB(NOW(), INTERVAL 1 week),DiskSpace,0)) AS WeekEventDiskSpace,
+    SUM(IF(StartTime > DATE_SUB(NOW(), INTERVAL 1 month),1,0)) AS MonthEvents,
+    SUM(IF(StartTime > DATE_SUB(NOW(), INTERVAL 1 month),DiskSpace,0)) AS MonthEventDiskSpace
+    FROM Events GROUP BY MonitorId
+    ) AS E ON E.MonitorId=Monitors.Id SET
+    Monitors.TotalEvents = E.TotalEvents,
+    Monitors.TotalEventDiskSpace = E.TotalEventDiskSpace,
+    Monitors.ArchivedEvents = E.ArchivedEvents,
+    Monitors.ArchivedEventDiskSpace = E.ArchivedEventDiskSpace,
+    Monitors.HourEvents = E.HourEvents,
+    Monitors.HourEventDiskSpace = E.HourEventDiskSpace,
+    Monitors.DayEvents = E.DayEvents,
+    Monitors.DayEventDiskSpace = E.DayEventDiskSpace,
+    Monitors.WeekEvents = E.WeekEvents,
+    Monitors.WeekEventDiskSpace = E.WeekEventDiskSpace,
+    Monitors.MonthEvents = E.MonthEvents,
+    Monitors.MonthEventDiskSpace = E.MonthEventDiskSpace;
+
diff --git a/version b/version
index 1304b01de..692c2e30d 100644
--- a/version
+++ b/version
@@ -1 +1 @@
-1.33.7
+1.33.8