Unable to import pandas
I've installed pandas using pip. I got the following versions of pip and numpy:

```
pvadrevu@MacPro~$ sudo pip freeze|grep pandas
pandas==0.14.0
pvadrevu@MacPro~$ sudo pip freeze|grep numpy
numpy==1.8.1
```

I am using this on OSX 10.9.2. I get the following error when trying to import pandas

```
numpy.dtype has the wrong size, try recompiling
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Library/Python/2.7/site-packages/pandas/__init__.py", line 6, in <module>
    from . import hashtable, tslib, lib
  File "numpy.pxd", line 157, in init pandas.hashtable (pandas/hashtable.c:22331)
ValueError: numpy.dtype has the wrong size, try recompiling
```
