Wrongly enabled buttons in apps/prefs

[diver]

There are several apps/prefs which enable some buttons on the first start, when i didn't change anything. Here is this list:

Fonts - Default
Keyboard - Default
Keymap - Revert, Use
Mouse - Default
Screen - Default, Revert, Apply
Scroll Bar - Default
Virtual memory - Default

Also, when you start Sounds, you could see how butons becomes disabled Sounds - Play, Stop.