MD5 problem

[fargo]

Hi.

I'm in trouble with the md5 module.

Under Linux, it's ok, I get real signatures.

The problem is under Windows XP, with some kind of files.

If I use the md5 module with .txt files, it'ok.

The Problem comes from the .msg files. I get the same signature for 
every .msg file I try to hash with the md5 algorithm. I think some 
character are strange for python, and makes it stop before the end of 
the .msg file.

So, my question is : Do anybody have a solution to this problem ? (I can 
post my source code if needed)

Thank you.