Index: app/helpers/application_helper.rb
===================================================================
--- app/helpers/application_helper.rb	(revision 16430)
+++ app/helpers/application_helper.rb	(working copy)
@@ -347,10 +347,11 @@
 
   # Returns an array of projects that are displayed in the quick-jump box
   def projects_for_jump_box(user=User.current)
-    if user.logged?
-      user.projects.active.select(:id, :name, :identifier, :lft, :rgt).to_a
-    else
-      []
+    relations = []
+    relations << user.projects.active if user.logged?
+    relations << Project.all_public
+    relations.inject([]) do |projects, r|
+      projects | r.select(:id, :name, :identifier, :lft, :rgt).to_a
     end
   end