Index: app/controllers/issues_controller.rb
===================================================================
--- app/controllers/issues_controller.rb	(revision 1674)
+++ app/controllers/issues_controller.rb	(working copy)
@@ -116,11 +116,15 @@
     @issue.copy_from(params[:copy_from]) if params[:copy_from]
     @issue.project = @project
     # Tracker must be set before custom field values
-    @issue.tracker ||= @project.trackers.find((params[:issue] && params[:issue][:tracker_id]) || params[:tracker_id] || :first)
-    if @issue.tracker.nil?
-      flash.now[:error] = 'No tracker is associated to this project. Please check the Project settings.'
-      render :nothing => true, :layout => true
-      return
+    unless @issue.tracker
+      if @project.trackers.empty?
+        flash.now[:error] = 'No tracker is associated to this project. Please check the Project settings.'
+        render :nothing => true, :layout => true
+        return
+      end
+      tracker_id = (params[:issue] && params[:issue][:tracker_id]) || params[:tracker_id]
+      @issue.tracker = @project.trackers.find_by_id(tracker_id) unless tracker_id.blank?
+      @issue.tracker ||= @project.trackers.find_by_id(@project.default_tracker_id)
     end
     @issue.attributes = params[:issue]
     @issue.author = User.current
Index: app/models/issue.rb
===================================================================
--- app/models/issue.rb	(revision 1674)
+++ app/models/issue.rb	(working copy)
@@ -116,7 +116,7 @@
   end
   
   def validate_on_create
-    errors.add :tracker_id, :activerecord_error_invalid unless project.trackers.include?(tracker)
+    errors.add :tracker_id, :activerecord_error_invalid if !tracker.blank? && !project.trackers.include?(tracker)
   end
   
   def before_create
Index: app/views/issues/_form.rhtml
===================================================================
--- app/views/issues/_form.rhtml	(revision 1674)
+++ app/views/issues/_form.rhtml	(working copy)
@@ -1,5 +1,5 @@
 <% if @issue.new_record? %>
-<p><%= f.select :tracker_id, @project.trackers.collect {|t| [t.name, t.id]}, :required => true %></p>
+<p><%= f.select :tracker_id, @project.trackers.collect {|t| [t.name, t.id]}, {:required => true, :include_blank => true} %></p>
 <%= observe_field :issue_tracker_id, :url => { :action => :new },
                                      :update => :content,
                                      :with => "Form.serialize('issue-form')" %>
Index: app/views/projects/_form.rhtml
===================================================================
--- app/views/projects/_form.rhtml	(revision 1674)
+++ app/views/projects/_form.rhtml	(working copy)
@@ -20,6 +20,7 @@
 <% @project.custom_field_values.each do |value| %>
 	<p><%= custom_field_tag_with_label :project, value %></p>
 <% end %>
+<p><%= f.select :default_tracker_id, (@trackers.collect {|p| [p.name, p.id]}), { :include_blank => true } %></p>
 </div>
 
 <% unless @trackers.empty? %>
Index: db/migrate/095_add_default_tracker_id.rb
===================================================================
--- db/migrate/095_add_default_tracker_id.rb	(revision 0)
+++ db/migrate/095_add_default_tracker_id.rb	(revision 0)
@@ -0,0 +1,9 @@
+class AddDefaultTrackerId < ActiveRecord::Migration
+  def self.up
+    add_column :projects, :default_tracker_id, :integer
+  end
+
+  def self.down
+    remove_column :projects, :default_tracker_id
+  end
+end
Index: lang/en.yml
===================================================================
--- lang/en.yml	(revision 1674)
+++ lang/en.yml	(working copy)
@@ -182,6 +182,7 @@
 field_searchable: Searchable
 field_default_value: Default value
 field_comments_sorting: Display comments
+field_default_tracker: Default tracker
 
 setting_app_title: Application title
 setting_app_subtitle: Application subtitle