I faced this problem about 50 % of time when I hit
follwing commands on python shell. 

But I think Crash of interpreter is not a expected
behaviour. It should throw some error even if I am
wrong/ hitting wrong commands 


1. on shell of linux  start python 
2  On python shell  hit _doc__     
                          ( underscore doc underscore
underscore )

So Python shell is crashed with following crash dump 


darwin{akabra}6: python
Python 2.2.2 (#1, Feb 24 2003, 19:13:11)
[GCC 3.2.2 20030222 (Red Hat Linux 3.2.2-4)] on linux2
Type "help", "copyright", "credits" or "license" for
more information.
>>> _doc__Segmentation fault (core dumped)
darwin{akabra}7: