Hi,
I couldn't find a CB 1.2 compatible version of the CB Author plugin, so I wrote a J!1.5 native plugin which links the author's byline at the top to their CB profile.
It works fine, but is listed as alpha as there is an optional very trivial 1 line edit to a core file.
If you don't do the edit, you'll get the author's name also appearing before the "Edit Item" icon when you log in to the front end as an editor or above.
The edit just comments out a line that adds the author name to the edit icon tooltip (i.e. the line doesn't add any functionality), so will not affect the functioning of your site.
If anyone has a workaround for this, please let me know and I'll update the file on the Joomlacode site.
You can get it at
joomlacode.org/gf/project/zakauthor2cb/frs/