fabianp/scikit-learn — comment on commit 4c9f9fec0b58107dd821d4f2d74c93c2eae88ada
File:  line 0
By larsmans:

In SciPy 0.9.0, the new version is slower as well expect for very sparse matrices, though I can't reproduce the dramatic 2x slowdown that @ogrisel reports, it's closer to ~1.5x.