Index: branches/5.1.x/install/upgrades.sql
===================================================================
diff -u -N -r13820 -r13958
--- branches/5.1.x/install/upgrades.sql	(.../upgrades.sql)	(revision 13820)
+++ branches/5.1.x/install/upgrades.sql	(.../upgrades.sql)	(revision 13958)
@@ -199,4 +199,13 @@
 
 # ===== v 5.1.0-RC1 =====
 
-# ===== v 5.1.0 =====
\ No newline at end of file
+# ===== v 5.1.0 =====
+
+# ===== v 5.1.1-B1 =====
+ALTER TABLE PollsComments CHANGE CreatedById CreatedById INT(11) NULL DEFAULT NULL;
+
+ALTER TABLE Topic
+	CHANGE OwnerId OwnerId INT( 11 ) NULL DEFAULT NULL ,
+	CHANGE ModifiedById ModifiedById INT( 11 ) NULL DEFAULT NULL;
+
+UPDATE Topic SET ModifiedById = NULL WHERE ModifiedById = 0;
\ No newline at end of file