--- a/src/browser/panels.py	Mon Jun 02 19:29:07 2014 +0200
+++ b/src/browser/panels.py	Wed Jun 04 00:22:00 2014 +0200
@@ -706,9 +706,21 @@
                 self.new_button = Button("New message", listener=addBox)
                 self.new_button.setStyleName("microblogNewButton")
                 self.vpanel.insert(self.new_button, 0)
-            else:
+            elif not self.getNewMainEntry():
                 addBox()
 
+    def getNewMainEntry(self):
+        """Get the new entry being edited, or None if it doesn't exists.
+
+        @return (MicroblogEntry): the new entry being edited.
+        """
+        try:
+            first = self.vpanel.children[0]
+        except IndexError:
+            return None
+        assert(first.type == 'main_item')
+        return first if first.empty else None
+
     @classmethod
     def registerClass(cls):
         base_widget.LiberviaWidget.addDropKey("GROUP", cls.createPanel)