Clipped colorbar values in matshow

Hi:

I'm using matshow with a colorbar to visualize a matrix. If the number
of digits used in the colorbar are too many, the digits are clipped.

The following code illustrates the behavior:

···

##################################
import matplotlib.pyplot as plt
import numpy as np

A = np.random.rand(100,10) / 100
plt.matshow(A)
plt.colorbar()
plt.show()
##################################

See http://imgur.com/AJmv0 for the output.

Is there an easy way to get the colormap without clipping? I can
resize the image manually to get all the digits, but I'm looking for
an automatic way to do this.

Should I report this as a bug?

I'm using mpl 1.3

Alejandro.