User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.3a4pre) Gecko/20100406 Minefield/3.7a4pre Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:18.104.22.168) Gecko/20100317 Lightning/1.0b1 Thunderbird/3.0.4 I have two accounts defined in TB, one (account A) with x509 certificates, which is set to not encrypt and not sign e-mails by default, and one (account B) that has no such certificates associated to it. When I compose an e-mail on account B and change the 'From' from account B to account A using the drop down box, the options to encrypt and sign the e-mail automatically get enabled for that e-mail. Reproducible: Always Steps to Reproduce: 1. Create 2 accounts, one with x509 certificates associated to it, one without. 2. Set first account to not encrypt/sign by default. 3. Compose e-mail using second account (or use reply/forward). 4. Change the 'From' from second account to first account. Actual Results: Both the sign and encrypt option are enabled for the outgoing mail. Expected Results: Sign and encrypt options should be set according to the defaults specified in the new 'From' account's options. Not sure if this might be relevant, but I do have the Enigmail plugin installed.
Have you tried safe mode? (see https://support.mozillamessaging.com/en-US/kb/Safe+Mode for more information) Are these two accounts are two identities on the same account ?
And I don't have the issue with Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:22.214.171.124pre) Gecko/20100411 Lanikai/3.1b2pre
These are two separate accounts. I tried Safe Mode and was not able to reproduce the issue there. Strangely enough, I was also no longer able to reproduce the issue after going back to normal mode.