The sticky keys feature is not used by many, but for those who play games and have assigned SHIFT or CTRL for a certain action in the game might get annoyed by the Sticky Keys configuration screen. (Especially if having uninstalled the accessibility options so one cannot turn off the activation of Sticky Keys via the user interface).
Change this registry key to disable the hotkey activation (FKF_HOTKEYACTIVE) of sticky keys:
Note one can completely disable accessibility options by renaming/deleting the registry-node Accessibility (Shown above).
[HKEY_CURRENT_USER \Control Panel \Accessibility \StickyKeys]
Flags = "506" (Default = "510")
More Info MSDN: Accessibility StickyKeys
Related Using Sticky Keys activation to reset Administrator password.