Странные дела.

Traceback (most recent call last):
  File "./benchmark.py", line 10, in <module>
    browser = webdriver.Firefox()
  File "/usr/lib64/python2.7/site-packages/selenium/webdriver/firefox/webdriver.py", line 59, in __init__
    self.binary, timeout),
  File "/usr/lib64/python2.7/site-packages/selenium/webdriver/firefox/extension_connection.py", line 47, in __init__
    self.binary.launch_browser(self.profile)
  File "/usr/lib64/python2.7/site-packages/selenium/webdriver/firefox/firefox_binary.py", line 66, in launch_browser
    self._wait_until_connectable()
  File "/usr/lib64/python2.7/site-packages/selenium/webdriver/firefox/firefox_binary.py", line 100, in _wait_until_connectable
   raise WebDriverException("The browser appears to have exited "
selenium.common.exceptions.WebDriverException: Message: The browser appears to have exited before we could connect. If you specified a log_file in the Firefox Binary constructor, check it for details.

#!/usr/bin/env python2.7
# coding=utf-8
from pyvirtualdisplay import Display
from termcolor import colored
from selenium import webdriver
count = 0
display = Display(visible=0, size=(1280, 1024))
display.start()
while count < 255:
	browser = webdriver.Firefox()
	browser.get('https://yandex.ru')
	print browser.title
	browser.find_element_by_link_text('tab-slovari').click()
	print colored('click', 'yellow')
	print 'start '+colored(str(count), 'red')+' browser'
	count=count+1
display.stop()

print colored(' ((( *** COMPLETED *** )))  ', 'cyan')

             total       used       free     shared    buffers     cached
Mem:      32915892   31199984    1715908     106408      50680     326192
-/+ buffers/cache:   30823112    2092780
Swap:     26212340    7634732   18577608