При тестировании сципи с использованием пакета с носомscipy.test()тест завершается неудачно в Ubuntu 12.04 со всеми установленными пакетами vanilla. Должен ли я волноваться, и если да, то как я могу это исправить?

In [8]: scipy.test()
Running unit tests for scipy
NumPy version 1.5.1
NumPy is installed in /usr/lib/python2.7/dist-packages/numpy
SciPy version 0.9.0
SciPy is installed in /usr/lib/python2.7/dist-packages/scipy
Python version 2.7.2+ (default, Jan 21 2012, 23:31:34) [GCC 4.6.2]
nose version 1.1.2

[................]

======================================================================
FAIL: test_io.test_imread
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/nose/case.py", line 197, in runTest
    self.test(*self.arg)
  File "/usr/lib/python2.7/dist-packages/numpy/testing/decorators.py", line 146, in skipper_func
    return f(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/scipy/ndimage/tests/test_io.py", line 16, in test_imread
    assert_array_equal(img.shape, (300, 420, 3))
  File "/usr/lib/python2.7/dist-packages/numpy/testing/utils.py", line 686, in assert_array_equal
    verbose=verbose, header='Arrays are not equal')
  File "/usr/lib/python2.7/dist-packages/numpy/testing/utils.py", line 579, in assert_array_compare
    raise AssertionError(msg)
AssertionError: 
Arrays are not equal

(shapes (2,), (3,) mismatch)
 x: array([300, 420])
 y: array([300, 420,   3])

----------------------------------------------------------------------
Ran 3780 tests in 32.328s

FAILED (KNOWNFAIL=11, SKIP=20, failures=1)