[SqueakMap already opened]
> That may be true.  I was working with a fresh image which hadn't had 
> SqueakMap opened previously, of course.  (Although I did have an 
> existing sm directory in my default directory... hopefully 
> that wouldn't affect anything.)  I'll let Goran comment more
> on that...

Mine was a clean image, too. I just had loaded SqueakMap before from a
different image in the same directory.

[Socket deadServer]
> Anyway, I didn't see either of these problems when updating 
> myself, and Bruce's alpha image on the ftp site also seems fine.

No, it isn't. Download it from the ftp site and say "update from server".
You'll get the very same DNU.

Cheers,
  - Andreas