pandas.io.tests.test_yahoo failure
``` python
FAIL: test_get_data (pandas.io.tests.test_yahoo.TestYahoo)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "<...>/pandas/io/tests/test_yahoo.py", line 97, in test_get_data
    assert result == expected
AssertionError
```

``` python
(pandas)[lodagro@ubuntu][1174][i] nosetests --pdb-failure pandas.io.tests.test_yahoo
<...>/pandas/io/tests/test_yahoo.py(97)test_get_data()
-> assert result == expected
(Pdb) p result
[18.38, 27.45, 24.28]
(Pdb) p expected
[18.38, 27.45, 24.54]
(Pdb) p pd.__version__
'0.11.0.dev-dad367e'
```
