Index: app/controllers/application_controller.rb
===================================================================
--- app/controllers/application_controller.rb	(revision 13100)
+++ app/controllers/application_controller.rb	(working copy)
@@ -558,7 +558,7 @@
 
   # Returns a string that can be used as filename value in Content-Disposition header
   def filename_for_content_disposition(name)
-    request.env['HTTP_USER_AGENT'] =~ %r{MSIE} ? ERB::Util.url_encode(name) : name
+    request.env['HTTP_USER_AGENT'] =~ %r{(MSIE|Trident)} ? ERB::Util.url_encode(name) : name
   end
 
   def api_request?