Index: app/views/issues/_form.rhtml
===================================================================
--- app/views/issues/_form.rhtml	(revision 1136)
+++ app/views/issues/_form.rhtml	(working copy)
@@ -57,3 +57,11 @@
     <%= javascript_include_tag 'calendar/calendar-setup' %>
     <%= stylesheet_link_tag 'calendar' %>
 <% end %>
+
+<script>
+var assigned_to_field = $('issue_assigned_to_id');
+var status_field = $('issue_status_id');
+assigned_to_field.observe('change', function (e) {
+  if (assigned_to_field.value != '') status_field.value='2';
+});
+</script>
Index: app/views/issues/context_menu.rhtml
===================================================================
--- app/views/issues/context_menu.rhtml	(revision 1136)
+++ app/views/issues/context_menu.rhtml	(working copy)
@@ -24,10 +24,10 @@
 		<a href="#" class="submenu"><%= l(:field_assigned_to) %></a>
 		<ul>
 		<% @assignables.each do |u| -%>
-		    <li><%= context_menu_link u.name, {:controller => 'issues', :action => 'edit', :id => @issue, 'issue[assigned_to_id]' => u, :back_to => @back}, :method => :post,
+		    <li><%= context_menu_link u.name, {:controller => 'issues', :action => 'edit', :id => @issue, 'issue[assigned_to_id]' => u, 'issue[status_id]' => 2,:back_to => @back}, :method => :post,
 		                              :selected => (u == @issue.assigned_to), :disabled => !@can[:update] %></li>
 		<% end -%>
-		    <li><%= context_menu_link l(:label_nobody), {:controller => 'issues', :action => 'edit', :id => @issue, 'issue[assigned_to_id]' => '', :back_to => @back}, :method => :post,
+		    <li><%= context_menu_link l(:label_nobody), {:controller => 'issues', :action => 'edit', :id => @issue, 'issue[assigned_to_id]' => '', 'issue[status_id]' => 1, :back_to => @back}, :method => :post,
 		                              :selected => @issue.assigned_to.nil?, :disabled => !@can[:update] %></li>
 		</ul>
 	</li>