Version: (using KDE 4.3.4) OS: Linux Installed from: Gentoo Packages I use cover switch (the cower-flow-style thingy where windows move from right to left) as effect for Alt+Tab. Also, I am a big fan of Drag+Drop between applications. For example: I want to drag a file from Krusader to KRename. If I switch to KRename fast enough so the effect would not be invoked, everything’s fine. But when I keep Alt pressed long enough so the cover switch gets shown, *Krusader* crashes as soon as I release Alt and thus end the effect. KWin itself does *not* crash but keeps running happily. "Related bugs" in the previous step of this bug report only showed entries about KWin crashing when using the vista-style effect. So I assume those might be related, but they’re not exactly the same. Sorry there’s no debug info; I’m on Gentoo without debugging stuff compiled in. But I suppose it is reproducable on other systems as well. Cheers
*** This bug has been marked as a duplicate of bug 192270 ***