matplotlib broken

[Federico Beffa]

Hi,

today I've updated all packages in my profile and I find that
matplotlib doesn't work anymore.

Starting ipython3 and executing the following commands

%matplotlib
import numpy as np
import matplotlib.pyplot as plt
t = np.r_[0:5]
plt.plot(t, t)

now produces an empty, gray window, while with the previous profile it
was working fine. I'm not sure how old my previous profile is, but it
uses python3.3.

Just reporting the problem and, for the moment, sticking with the old one.

Regards,
Fede