diff --git a/bin/main.ml b/bin/main.ml
index 07e234b..e599f50 100644
--- a/bin/main.ml
+++ b/bin/main.ml
@@ -62,16 +62,14 @@ let app _idb =
   in
   let now_playing =
     let playlist =
-      (* let playlist = Lwd.map (Lwd.get playstate.playlist) ~f:(Option.value ~default: ) *)
       Lwd.map (Lwd.get Player.playstate.playlist) ~f:(function
         | None -> Elwd.span [ `P (El.txt' "Nothing playing") ]
         | Some playlist ->
             Ui_playlist.make ~reset_playlist:P.reset_playlist ~fetch player
-              (Lwd.pure (Fut.ok playlist))
-            (* FIXME that's awful use of lwd*))
+              (Lwd.pure (Fut.ok playlist)))
     in
     (*todo: do we need that join ?*)
-    Elwd.div [ `R (Lwd.join playlist) ]
+    Lwd.join playlist
   in
   Elwd.div
     ~at:Brr_lwd_ui.Attrs.(to_at ~id:"main-layout" @@ classes [])
diff --git a/bin/ui_playlist.ml b/bin/ui_playlist.ml
index bbd894f..4946e18 100644
--- a/bin/ui_playlist.ml
+++ b/bin/ui_playlist.ml
@@ -212,7 +212,10 @@ let lazy_table (type data) ~(ui_table : Table.fixed_row_height)
         ( (0, Lwd_seq.empty, 0),
           fun (n, s, m) (p, s', q) ->
             match (Lwd_seq.view s, Lwd_seq.view s') with
-            | Empty, Empty -> (n + m + p + q, s, 0)
+            | Empty, Empty ->
+                (* Since s is empty it does not matter on which
+                   "side" of it the spaces are accumulated. *)
+                (n + m + p + q, s, 0)
             | Empty, _ -> (n + m + p, s', q)
             | _, Empty -> (n, s, m + p + q)
             | _, _ ->
diff --git a/lib/db/sync.ml b/lib/db/sync.ml
index 4d72b9f..04242a7 100644
--- a/lib/db/sync.ml
+++ b/lib/db/sync.ml
@@ -309,7 +309,7 @@ let sync ?(report = fun _ -> ()) ~(source : Source.connexion) idb =
     in
     enqueue ~start_index:first total;
     let total_queries = Queue.length fetch_queue in
-    let rec run_queue ?(threads = 2) q =
+    let rec run_queue ?(threads = 1) q =
       assert (threads > 0);
       let rec take_n acc n =
         if n = 0 then List.rev acc
diff --git a/web/main.css b/web/main.css
index fe25943..068ae6d 100644
--- a/web/main.css
+++ b/web/main.css
@@ -61,6 +61,7 @@ body {
 
 .lazy-table {
     display: inline-grid;
+    align-content: start;
     box-sizing: border-box;
     width: 100%;
     height: 100%;