I've noticed that Maia has visibly slow drawing of the application menus when selected. When I click on a menu (for example, "File" or "Refactor"), there is a pause (sometimes a half a second to a few seconds), then I can see the all the menu items start out as "loading" and change one-by-one to their actual menu item text. You can also observe the menu resizing to accomodate the longer text items.
I can reproduce this in build #10666 and #10762 on my Mac OS X 10.5.8, JDK 1.5.0_20.
Does anyone else observe this problem?