[Evolution] Can't view PGP signed message

["Stephen Rees" <Stephen Rees fresno gov>]

Evolution 2.10.0 on Mandriva 2007.1
Had the same issue with 2.8.x on Mandriva 2007.0

I can open a message that has been signed (for example, from sans.org)
and I've figured out how to get it to recognize and accept the signature
so that it gives me the green box that the message signature is OK.

However, I cannot get it to show me the actual message without using the
menu to view the message source.

Ideas for a newbie?

Thanks...