validateMenuItem: called too often?

[Dirk Lattermann]

Hello,

I just realized that validateMenuItem: (here for the Save... menu item 
with the saveDocument: action) is called every time the mouse enters 
or exits a TextField, a TableView, a Browser and several other UI 
items. This is an awful lot! Is it really needed? In which cases does 
it make sense to change the enabled-status of a menu item or pop up 
cell based on the mouse entering or exiting an UI item?

Dirk Lattermann