Hi I have it set to highlight author comments in green:
http://www.fork.org.uk/photos/fork-c.../#comment-2695

Has always worked
but I just made a comment and it isn't showing as this:
http://www.fork.org.uk/2009/03/fork-.../#comment-2787

When I test posting a comment elsewhere, it works fine.

Many thanks

lol

Never mind. - I think I've just realised what's happened - I posted using my admin account but I put the author as a different person. I thought the highlighting meant that as admin I would ALWAYS be green but I'm guessing now it's only green on posts I claim authorship to ??

If this is the case then could I suggest an option to make an admin always be a certain colour rather than just on their own posts?