Failed test on travis TestYahoo:test_get_quote_string
```
======================================================================
FAIL: test_get_quote_string (pandas.io.tests.test_data.TestYahoo)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/travis/virtualenv/python2.7_with_system_site_packages/local/lib/python2.7/site-packages/pandas-0.12.0rc1-py2.7-linux-x86_64.egg/pandas/util/testing.py", line 765, in network_wrapper
    return t(*args, **kwargs)
  File "/home/travis/virtualenv/python2.7_with_system_site_packages/local/lib/python2.7/site-packages/pandas-0.12.0rc1-py2.7-linux-x86_64.egg/pandas/io/tests/test_data.py", line 121, in test_get_quote_string
    assert_frame_equal(df, df2)
  File "/home/travis/virtualenv/python2.7_with_system_site_packages/local/lib/python2.7/site-packages/pandas-0.12.0rc1-py2.7-linux-x86_64.egg/pandas/util/testing.py", line 238, in assert_frame_equal
    check_less_precise=check_less_precise)
  File "/home/travis/virtualenv/python2.7_with_system_site_packages/local/lib/python2.7/site-packages/pandas-0.12.0rc1-py2.7-linux-x86_64.egg/pandas/util/testing.py", line 197, in assert_series_equal
    assert_almost_equal(left.values, right.values, check_less_precise)
  File "/home/travis/virtualenv/python2.7_with_system_site_packages/local/lib/python2.7/site-packages/pandas-0.12.0rc1-py2.7-linux-x86_64.egg/pandas/util/testing.py", line 141, in assert_almost_equal
    assert_almost_equal(a[i], b[i], check_less_precise)
  File "/home/travis/virtualenv/python2.7_with_system_site_packages/local/lib/python2.7/site-packages/pandas-0.12.0rc1-py2.7-linux-x86_64.egg/pandas/util/testing.py", line 170, in assert_almost_equal
    1, a / b, decimal=decimal, err_msg=err_msg(a, b), verbose=False)
  File "/home/travis/virtualenv/python2.7_with_system_site_packages/local/lib/python2.7/site-packages/numpy/testing/utils.py", line 468, in assert_almost_equal
    raise AssertionError(msg)
AssertionError: 
Arrays are not almost equal to 5 decimals expected 1.07000 but got 1.06000
----------------------------------------------------------------------
Ran 3530 tests in 193.433s
FAILED (SKIP=37, failures=1)
The command "ci/script.sh" exited with 1.
after_script
$ ci/print_versions.py
INSTALLED VERSIONS
------------------
Python: 2.7.3.final.0
OS: Linux 2.6.32-042stab061.2 #1 SMP Fri Aug 24 09:07:21 MSK 2012 x86_64
LC_ALL: en_US.UTF-8
LANG: en_US.UTF-8
Cython: 0.19.1
Numpy: 1.7.1
Scipy: 0.9.0
statsmodels: 0.5.0.dev-c9062e4
    patsy: 0.1.0
scikits.timeseries: 0.91.3
dateutil: 2.1
pytz: 2013b
bottleneck: 0.6.0
PyTables: 2.3.1
    numexpr: 2.1
matplotlib: 1.2.1
openpyxl: 1.6.2
xlrd: 0.9.2
xlwt: 0.7.5
sqlalchemy: Not installed
lxml: 3.2.1
bs4: 4.0.2
html5lib: 1.0b2
Done. Your build exited with 1.
```
