I wonder if the experience I had today has any connection with the issue. Web Clipper was not working for me in Safari after I upgraded to Mavericks (I was getting the eternal loading animation), so I decided to install it on Firefox. During the installation process, I was asked to follow a link from an email (which opened in Safari) and to sign in to Evernote. My username and password automatically filled in from my keychain. But when I submitted, login failed because the site said the password was wrong (funny, since it was automatically filled in from my keychain, and had been working for m