Index: filefield_sources_plupload.module
===================================================================
--- filefield_sources_plupload.module	(revision 421)
+++ filefield_sources_plupload.module	(working copy)
@@ -147,6 +147,7 @@
       $temp_filepath = file_unmanaged_move($source, $temp_destination, FILE_EXISTS_REPLACE);
       // Save the files to their final destination.
       if ($file = filefield_sources_save_file($temp_filepath, $upload_validators, $upload_location)) {
+		file_unmanaged_delete($temp_filepath);
         $saved_files[] = $file;
       }
     }