Well, this really sucks. I see several others are have the same or similar issues. In my case, the site I'm trying to update (curmudgeoncookery.com) goes down just as soon as the update files are loaded. (Server connection is closed and no data is sent on every request). I've tried it three times now - once with automagic update, and twice manually. Luckily, I keep the structure and the site on my environment, so I can just re-FTP the old version back in over the new one - and presto! - everything works again.
Now, of course, comes the more difficult issue of trying to figure out what is actually broken. I'm a little trepidatious, however, just because of versioning between various modules of different releases. I may introduce more problems than I solve this way. But - any other suggestions other than to just wait for a correction or next update?