DataFrame crashes system
Hi,

The following:

df = DataFrame(randn(10, 4), columns=['A', 'B', 'C', 'D'])
print df       #df.to_string fails also

crashes my system, no error given, simply asked to shut down application. 
However:

print df.values

does not. Any help apprecitated.

running:

pandas-0.7.0rc1.win32-py2.6
ActivePython-2.6.7.20-win32-x86
numpy-1.6.1-win32-superpack-python2.6
