Comment toolbars
EDIT: Well sometimes you have to post, after many hours of frustration, only to find the answer a few seconds later, right? I couldn't figure out how to delete the post, but I've just dicovered this is a symptom of VIEW > ENABLE/DISABLE NEW ACROBAT. I really don't like 'New Acrobat' and it's requirement to have an extra click just to show you the available tools. Still, we're not all the same are we! ...
On my laptop the comments tool bar looks like this, which is great and shows all the tools in one go to be clicked without subselecting:

On my imac I have this:

I can't for the life of me find how to change the toolbars from a vertical floating window to the top of the app.
