diff --git a/access.lua b/access.lua
index f47ef87..6aaad1f 100644
--- a/access.lua
+++ b/access.lua
@@ -306,11 +306,11 @@ end
 --
 
 function scandir(directory, callback)
-    local i, popen = 0, io.popen
+    -- FIXME : this sometime fails (randomly...)
+    -- because of 'interrupted system call'
     -- use find (and not ls) to list only files recursively and with their full path relative to the asked directory
-    local pfile = popen('cd "'..directory..'" && find * -type f')
+    local pfile = io.popen('cd "'..directory..'" && find * -type f')
     for filename in pfile:lines() do
-        i = i + 1
         callback(filename)
     end
     pfile:close()
diff --git a/portal/assets/js/ynhpanel.js b/portal/assets/js/ynhpanel.js
index 3369950..c5ba413 100644
--- a/portal/assets/js/ynhpanel.js
+++ b/portal/assets/js/ynhpanel.js
@@ -257,6 +257,7 @@ function init_portal_button_and_overlay()
 
   // Inject portal stylesheet
   // (we need it for the portal button to be displayed correctly)
+  // FIXME : Really wondering if we shouldn't set this in data/templates/nginx/plain/yunohost_panel.conf.inc ...
   var portalStyle = document.createElement("link");
   portalStyle.setAttribute("rel", "stylesheet");
   portalStyle.setAttribute("type", "text/css");
@@ -276,8 +277,9 @@ function init_portal_button_and_overlay()
 
   // Bind portal button
   // FIXME : this somehow prevent the portalButton
-  // from being dragged correctly
-  // when mouse is moving too fast
+  // from being dragged correctly when mouse is moving too fast
+  // ... this seem to be okay in the "app" itself, but the bug
+  // is happening when *in* the portal overlay inside an app...
   window.addEvent(portalButton, 'click', function(e){
       // Prevent default click
       window.eventPreventDefault(e);