Ctrl+Shift+Arrows

Hello I have a simple problem and do not know where to look for solution or to which bugzilla to report it. Old good shortcut for jumping a "word" back and forward was ctrl+left/right. This works. But if I press shift at the same time to select whole word - selection works, but "jumping" - doesn't. Where does this problem lie? KDE? X? Something else? Thank you! -- Tomas Straupis