Hello,
I've just upgraded to 6.1.1 and proceeded to use global settings window to disable all the clutter, however it seems that the checkboxes are wired up wrong, they don't seem to correspond with the rollouts they disable:
For example, on the picture, I have About disabled, yet it still shows. At the same time, Tree Editor, which is enabled, is now gone.
Hopefully it can be fixed soon, this feature is the main reason I've upgraded.