Hi Marc,
I just saw the thread and sorry for the delay.
1 - Not directly related, but when adding a new user the dialog box is movable, is resizable, and has a scrollbar. When editing a user, it's a different type of dialog and isn't movable or directly scrollable. To scroll in that window, one must use the regular window's scrollbar to the far right. I prefer the first method, but either way they (and all of our dialogs, I think) should match in style.
This is true when clicking the "Add a new user" link provided under the host name(as an example localhost->). But when we select a specific database (as an example localhost->test )and then click on the "Add a new user" link the Ajaxyfied window is not appear. Instead of that it directs to a new window. Is that a feature. Please check on that.
Regards, Thilanka.