diff --git a/zlo_search/DB Scripts/SQL/base_tables/create_table_nickhost.sql b/zlo_search/DB Scripts/SQL/base_tables/create_table_nickhost.sql
index f1c12ec7..b430c258 100644
--- a/zlo_search/DB Scripts/SQL/base_tables/create_table_nickhost.sql	
+++ b/zlo_search/DB Scripts/SQL/base_tables/create_table_nickhost.sql	
@@ -15,7 +15,7 @@ ALTER TABLE nickhost ADD INDEX idx_host (host);
 -- initial
 insert into nickhost (nick, host, reg, cnt)
 select nick, host, reg, count(1) cnt from messages
-group by nick, host;
+group by nick, host, reg;
 
 -- trigger
 DROP TRIGGER IF EXISTS trigger_nickhost;
diff --git a/zlo_search/DB Scripts/misc/fixNicks.sql b/zlo_search/DB Scripts/misc/fixNicks.sql
index 3a0b3774..6405db41 100644
--- a/zlo_search/DB Scripts/misc/fixNicks.sql	
+++ b/zlo_search/DB Scripts/misc/fixNicks.sql	
@@ -5,4 +5,4 @@ delete from nickhost;
 
 insert into nickhost (nick, host, reg, cnt)
 select nick, host, reg, count(1) cnt from messages
-group by nick, host;
\ No newline at end of file
+group by nick, host, reg;
\ No newline at end of file
diff --git a/zlo_search/DB Scripts/move_to_one_db.sql b/zlo_search/DB Scripts/move_to_one_db.sql
index ab8f4058..0821e4e4 100644
--- a/zlo_search/DB Scripts/move_to_one_db.sql	
+++ b/zlo_search/DB Scripts/move_to_one_db.sql	
@@ -86,7 +86,7 @@ ALTER TABLE anime_nickhost ADD INDEX idx_host (host);
 -- initial
 insert into anime_nickhost (nick, host, reg, cnt)
 select nick, host, reg, count(1) cnt from anime_messages
-group by nick, host;
+group by nick, host, reg;
 
 -- trigger
 DROP TRIGGER IF EXISTS anime_trigger_nickhost;
@@ -159,7 +159,7 @@ ALTER TABLE velo_nickhost ADD INDEX idx_host (host);
 -- initial
 insert into velo_nickhost (nick, host, reg, cnt)
 select nick, host, reg, count(1) cnt from velo_messages
-group by nick, host;
+group by nick, host, reg;
 
 -- trigger
 DROP TRIGGER IF EXISTS velo_trigger_nickhost;
@@ -232,7 +232,7 @@ ALTER TABLE sport_nickhost ADD INDEX idx_host (host);
 -- initial
 insert into sport_nickhost (nick, host, reg, cnt)
 select nick, host, reg, count(1) cnt from sport_messages
-group by nick, host;
+group by nick, host, reg;
 
 -- trigger
 DROP TRIGGER IF EXISTS sport_trigger_nickhost;
diff --git a/zlo_search/DB Scripts/move_to_one_db_create.py b/zlo_search/DB Scripts/move_to_one_db_create.py
index 11cbc587..4333e172 100644
--- a/zlo_search/DB Scripts/move_to_one_db_create.py	
+++ b/zlo_search/DB Scripts/move_to_one_db_create.py	
@@ -103,7 +103,7 @@
 -- initial
 insert into %(site)s_nickhost (nick, host, reg, cnt)
 select nick, host, reg, count(*) cnt from %(site)s_messages
-group by nick, host;
+group by nick, host, reg;
 
 -- trigger
 DROP TRIGGER IF EXISTS %(site)s_trigger_nickhost;
diff --git a/zlo_search/DB Scripts/move_to_one_db_generated.sql b/zlo_search/DB Scripts/move_to_one_db_generated.sql
index 636020c9..ed9b83c1 100644
--- a/zlo_search/DB Scripts/move_to_one_db_generated.sql	
+++ b/zlo_search/DB Scripts/move_to_one_db_generated.sql	
@@ -87,7 +87,7 @@ ALTER TABLE anime_nickhost ADD INDEX idx_host (host);
 -- initial
 insert into anime_nickhost (nick, host, reg, cnt)
 select nick, host, reg, count(*) cnt from anime_messages
-group by nick, host;
+group by nick, host, reg;
 
 -- trigger
 DROP TRIGGER IF EXISTS anime_trigger_nickhost;
@@ -160,7 +160,7 @@ ALTER TABLE dev_nickhost ADD INDEX idx_host (host);
 -- initial
 insert into dev_nickhost (nick, host, reg, cnt)
 select nick, host, reg, count(*) cnt from dev_messages
-group by nick, host;
+group by nick, host, reg;
 
 -- trigger
 DROP TRIGGER IF EXISTS dev_trigger_nickhost;
@@ -233,7 +233,7 @@ ALTER TABLE games_nickhost ADD INDEX idx_host (host);
 -- initial
 insert into games_nickhost (nick, host, reg, cnt)
 select nick, host, reg, count(*) cnt from games_messages
-group by nick, host;
+group by nick, host, reg;
 
 -- trigger
 DROP TRIGGER IF EXISTS games_trigger_nickhost;
@@ -306,7 +306,7 @@ ALTER TABLE np_nickhost ADD INDEX idx_host (host);
 -- initial
 insert into np_nickhost (nick, host, reg, cnt)
 select nick, host, reg, count(*) cnt from np_messages
-group by nick, host;
+group by nick, host, reg;
 
 -- trigger
 DROP TRIGGER IF EXISTS np_trigger_nickhost;
@@ -379,7 +379,7 @@ ALTER TABLE sport_nickhost ADD INDEX idx_host (host);
 -- initial
 insert into sport_nickhost (nick, host, reg, cnt)
 select nick, host, reg, count(*) cnt from sport_messages
-group by nick, host;
+group by nick, host, reg;
 
 -- trigger
 DROP TRIGGER IF EXISTS sport_trigger_nickhost;
@@ -452,7 +452,7 @@ ALTER TABLE takeoff_nickhost ADD INDEX idx_host (host);
 -- initial
 insert into takeoff_nickhost (nick, host, reg, cnt)
 select nick, host, reg, count(*) cnt from takeoff_messages
-group by nick, host;
+group by nick, host, reg;
 
 -- trigger
 DROP TRIGGER IF EXISTS takeoff_trigger_nickhost;
@@ -525,7 +525,7 @@ ALTER TABLE velo_nickhost ADD INDEX idx_host (host);
 -- initial
 insert into velo_nickhost (nick, host, reg, cnt)
 select nick, host, reg, count(*) cnt from velo_messages
-group by nick, host;
+group by nick, host, reg;
 
 -- trigger
 DROP TRIGGER IF EXISTS velo_trigger_nickhost;
@@ -598,7 +598,7 @@ ALTER TABLE zlo_nickhost ADD INDEX idx_host (host);
 -- initial
 insert into zlo_nickhost (nick, host, reg, cnt)
 select nick, host, reg, count(*) cnt from zlo_messages
-group by nick, host;
+group by nick, host, reg;
 
 -- trigger
 DROP TRIGGER IF EXISTS zlo_trigger_nickhost;
diff --git a/zlo_web/src/main/java/info/xonix/zlo/web/logic/ImgLogic.java b/zlo_web/src/main/java/info/xonix/zlo/web/logic/ImgLogic.java
index c7cb72c6..7cdcb2dc 100644
--- a/zlo_web/src/main/java/info/xonix/zlo/web/logic/ImgLogic.java
+++ b/zlo_web/src/main/java/info/xonix/zlo/web/logic/ImgLogic.java
@@ -62,7 +62,7 @@ public static void renderPreviewAndCache(String url, HttpServletResponse resp, S
                     err = true;
                 } else {
 //                    log.info("renderPreviewAndCache " + url + ": cached");
-                    resp.setContentType("image/jpeg");
+                    resp.setContentType("image/png");
                     FileUtils.copyFile(previewFile, outputStream);
                 }
             } else {
@@ -81,9 +81,9 @@ public static void renderPreviewAndCache(String url, HttpServletResponse resp, S
                     err = true;
                 }
                 if (previewImg != null) {
-                    resp.setContentType("image/jpeg");
-                    ImageIO.write(previewImg, "jpg", previewFile);
-                    ImageIO.write(previewImg, "jpg", outputStream);
+                    resp.setContentType("image/png");
+                    ImageIO.write(previewImg, "png", previewFile);
+                    ImageIO.write(previewImg, "png", outputStream);
                 }
             }
         } catch (Exception e) {
diff --git a/zlo_web/src/main/webapp/stats.jsp b/zlo_web/src/main/webapp/stats.jsp
index 94e04013..894b0ce4 100644
--- a/zlo_web/src/main/webapp/stats.jsp
+++ b/zlo_web/src/main/webapp/stats.jsp
@@ -32,7 +32,7 @@
     <c:when test="${byNick}">
         <sql:query var="res">
             select nick, user_id, reg, COUNT(*) cnt from ${messagesTbl}${' '}${msgDateWhereClause}
-            group by nick
+            group by nick, user_id, reg
             order by cnt desc;
             <sql:param>${periodDays}</sql:param>
         </sql:query>