The providers of the Movable Type software are working on our sign-in problem. They have identified it as associated with the change from Type Key to Type Pad and are endeavoring to fix it. Meanwhile, the only "work-around" is repeated sign-in efforts. I know.
Also, we're investigating a change of blogging platform that will eliminate a list of problems with the current setup, most of which affect me and not readers. For example, each blog post now takes 40 seconds or so to load. And loading a photo to the server and then to a blog item is a process of more than a minute at times. Etc. This may not seem like much, but over the course of a day posting 20 items or so, it adds up to a lot of dead time, particularly when it's repeated when I go in to fix typos, update, etc.
Thanks for your patience and for sticking around.