You are check it with the Author login?
I have current test it, works fine. Maybe a other plugin, there change the global var $menu.
Yes I check it with Author login.
Author can see +new button and a comment awaiting little button too.
What does it mean “Maybe a other plugin”?! If your plugin has a problem with other plugins, you must to know about it, not me))
Do you mean the +new in the menu of admin or you mean the +new button in the list post/page.
The +new button on the list post/page is not hide with this option. For this you must create a new custom option in Adminimize.
Use on the current WP version 3.5 the class add-new-h2
.
Also you have a +new in the admin bar, that is also a new option in the admin bar seetings of Adminimize.