# File lib/dragonfly/file_data_store.rb, line 151
    def disambiguate(path)
      dirname = File.dirname(path)
      basename = File.basename(path, '.*')
      extname = File.extname(path)
      "#{dirname}/#{basename}_#{(Time.now.usec*10 + rand(100)).to_s(32)}#{extname}"
    end