Intenté instalar scikit-learn en mi Linux Mint 12 pero no lo conseguí. Descargué el paquete dehttp://pypi.python.org/pypi/scikit-learn/ e instalado con

sudo python2.7 setup.py install

Luego cambié el directorio a home e inicié la shell python2.7. Al importar sklearn tengo:

>>> import sklearn
/usr/lib/python2.7/dist-packages/scipy/spatial/__init__.py:7: RuntimeWarning: 
numpy.dtype size changed, may indicate binary incompatibility
    from ckdtree import *
/usr/lib/python2.7/dist-packages/scipy/spatial/__init__.py:7: RuntimeWarning:
numpy.ndarray size changed, may indicate binary incompatibility
    from ckdtree import *
/usr/lib/python2.7/dist-packages/scipy/spatial/__init__.py:7: RuntimeWarning: 
numpy.ufunc size changed, may indicate binary incompatibility
    from ckdtree import *
/usr/lib/python2.7/dist-packages/scipy/spatial/__init__.py:8: RuntimeWarning: 
numpy.dtype size changed, may indicate binary incompatibility
    from qhull import *
/usr/lib/python2.7/dist-packages/scipy/spatial/__init__.py:8: RuntimeWarning: 
numpy.ndarray size changed, may indicate binary incompatibility
    from qhull import *
/usr/lib/python2.7/dist-packages/scipy/spatial/__init__.py:8: RuntimeWarning:  
numpy.ufunc size changed, may indicate binary incompatibility
    from qhull import *

Creo que el problema es con Scipy's Spatial. Esto es porque cuando lo hago

>>> from scipy import spatial

Recibo el mismo error que recibo para Scikit-learn.

Por favor ayuda. Gracias.

EDITAR: Nuevo error.

>>> import sklearn
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python2.7/dist-packages/scikit_learn-0.12_git-py2.7-linux-
x86_64.egg/sklearn/__init__.py", line 17, in <module>
    from .base import clone
  File "/usr/local/lib/python2.7/dist-packages/scikit_learn-0.12_git-py2.7-linux-
x86_64.egg/sklearn/base.py", line 11, in <module>
    from .metrics import r2_score
  File "/usr/local/lib/python2.7/dist-packages/scikit_learn-0.12_git-py2.7-linux-
x86_64.egg/sklearn/metrics/__init__.py", line 6, in <module>
    from .metrics import confusion_matrix, roc_curve, auc, precision_score, \
  File "/usr/local/lib/python2.7/dist-packages/scikit_learn-0.12_git-py2.7-linux-  
x86_64.egg/sklearn/metrics/metrics.py", line 17, in <module>
    from ..utils import check_arrays
  File "/usr/local/lib/python2.7/dist-packages/scikit_learn-0.12_git-py2.7-linux-
x86_64.egg/sklearn/utils/__init__.py", line 9, in <module>
    from .murmurhash import murmurhash3_32
  File "numpy.pxd", line 174, in init sklearn.utils.murmurhash (sklearn/utils
/murmurhash.c:4776)
ValueError: numpy.ndarray has the wrong size, try recompiling