Here is the link with the details about the openPGP/s-mime issues reported by EFF:
It looks like the problem is on how several clients handle the decryption (they do some actions they shouldn't, trying to render HTML) and not on the encryption technology itself.
I think this could have publicized using better words.
Meanwhile disable the HTML rendering of your client, if you want to read encrypted emails.
s.ovalerio.net is one server in the network