Description of Problem:
inline signatures or encrypted messages are not recognized.
I consider this an usually minor issue since it's not the most common way
to use digital signatures, however, I happen into that frequently at work
since my colleagues use some form of outlook with pgpfreeware which puts
the messages in inline form.

Steps to reproduce the problem:
1. receive mail in such a state

Actual Results:
Is just considered as any other text

Expected Results:
recognize the digital signature.
This is a regression in relation to the stable series.

How often does this happen? 
always