problem using ctypes with MMX intrinsics

[dcharno]

Is it possible to use ctypes with a shared library which uses MMX/SSE 
intrinsics?  I can load the library and access functions inside it, but 
I getting a seg fault when I hit one of the intrinsics.  I'm wondering 
if there might be some sort of stack alignment problem.

I am using gcc version 4.2.3 and Python 2.5.2 on Ubuntu 8.04.
Any suggestions would be helpful.
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