kmail: strange behaviour with some s/mime encrypted emails

[Andreas Petzold]

> OK, recently I got an update of my kdepim packages
> to version 20080109 r758806. And hooray - no more garbled messages!
> But now I can't decrypt them :-( since it says: Unsupported algorithm.
> And this is confusing! As you can see from

> http://tinyurl.com/38fx3e

> my old kmail version was able to decrypt the message.

> Is thunderbird doing something non-standard compliant when it omits
> the "smime-type=enveloped-data" header or is this a problem in kmail?
> Or am I missing something here?

Oh my, there seem to be known issues both with thunderbird and kmail:

http://www.nabble.com/forum/ViewPost.jtp?post=10012362&framed=y
https://bugzilla.mozilla.org/show_bug.cgi?id=379625

Still, I don't understand what's really going on. I'd appreciate some  
guidance here.

Cheers,

Andreas