> How can I update my mirror, but only
> to download the 10 missing css/image files
> and update all the local references
> without checking to see if every single file has
> been updated?You can't. But updating is quick, about 5 files/second.

> I would really love it if +*.css was part of the
> default
The default is to download everything from the starting site. No filter is
needed, unless there is a robots.txt rule.
To get other files from other sites use the near flag  (-n) get non-html files
related.