I have an annoying issue which is present in both LM17 (with KDE 4.13) and LM17.1 (with KDE 4.14). Windows (both full-screen and not) lose focus randomly (so I stop typing in a document and apparently click some KDE shortcuts, or full-screen game minimizes etc.). This is extremely annoying in the long run.

The problem is also described by another user over there: viewtopic.php?t=111429

However, in my case nor changing "focus stealing prevention" nor "accept focus" helps in any way. Could somebody help me? I really love linux and KDE as both are way more convenient than alternatives, but this issue is driving me insane!

What gets the focus instead?
Is there a pattern among the keys you press when loosing the focus?
Do perhaps notifications show up when this happens?

Nevermind, I've fixed the issue finally today. I've played with the settings many times before but only today found the solution.

I followed the advice given in the linked by me in the first post topic, but in "Window class" instead of "Exact Match" I had to choose "Substring Match". So far it seems to work.