diff --git a/app/models/user.rb b/app/models/user.rb
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -317,7 +317,17 @@
     self.groups.each do |group|
       group.problems.where(available: true).each { |p| problem << p }
     end
-    return problem.uniq
+    problem.uniq!.sort! do |a,b|
+      case
+      when a.date_added < b.date_added
+        -1
+      when a.date_added > b.date_added
+        1
+      else
+        a.name <=> b.name
+      end
+    end
+    return problem
   end
 
   def can_view_problem?(problem)