Using the binaries at matplotlib.sf.net:

d...@strafe:~$ ipython -pylab
Python 2.6.2 (r262:71600, Apr 16 2009, 09:17:39)
Type "copyright", "credits" or "license" for more information.

IPython 0.10 -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object'. ?object also works, ?? prints more.

   Welcome to pylab, a matplotlib-based Python environment.
   For more information, type 'help(pylab)'.

In [1]: matplotlib.__version__Out[1]: '0.99.0'

In [2]: matplotlib.get_backend()
Out[2]: 'TkAgg'

In [3]: plt.figure()
Bus error


GDB says this was the problem:

 >>> fig = plt.figure()

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_PROTECTION_FAILURE at address: 0x00000028
0x00e04d95 in PyArray_INCREF ()

I wonder if this is caused by me having my own freetype installed  
under /usr/local (I was installing Chaco the other day from source,  
and thus required it), and the dynamic linker getting confused about  
which version to use?

David

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