I open the "Mail & Newsgroups Account Settings", select "Security" under my IMAP account. I check the "Digitally sign messages" box, and select a certificate. I click ok, and the dialog closes. When I re-open the dialog, or try to sign an e-mail it seems like my change has not taken effect. A clue might be the following error message printed on the console after clicking ok: ERROR: am-smime.xul hasn't loaded yet! Not saving. I'm running a cvs-checkout from at most a few days ago. This may be a dupe of bug #118945 (But under Linux and for a mail server).
This is related to imap security settings so I don't think it's a dupe of bug #118945.
This got to be a dup of bug 117714. Please try with the latest build and let me know fi you still see problems. thanks. Marking this as dup. *** This bug has been marked as a duplicate of 117714 ***
Confirming that this works now. Sorry about the dupe.