send_keys appends text to url in address bar instead of entering value into input field.
Seems to be similiar problem as: http://code.google.com/p/selenium/issues/detail?id=1766

What steps will reproduce the problem?
Example python code attached (selenium installed by: pip install selenium):

import time
from selenium.webdriver import Firefox as FirefoxWebDriver
driver = FirefoxWebDriver()
driver.get('http://google.com')
t = driver.find_element_by_id('lst-ib')
t.send_keys('dd')
time.sleep(5)
driver.close()

What is the expected output? What do you see instead?
I expect text 'dd' to be entered into input field, instead I see 'dd' appended to url:
http://www.google.pl/dd


Selenium version: 2.6.0
OS: Ubuntu: 2.6.38-11-generic, x86_64
Browser: Firefox
Brower version: 6.0.2


Please provide any additional information below. A sample reduced test
case, or a public URL that demonstrates the problem will intrigue our merry
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