Comment 107 for bug 1173349

So here's what I've found so far. My work laptop has an Intel chipset and a 64-bit install of Fedora 18. I've never had the notification widget crash the desktop there. My home computer has a nVidia card and was a 32-built version of Fedora 18 and was having crashes all the time. I reinstalled with a 64-built Fedora 18 build and still had the issues. The only way I've been able to keep kwin from dying is to disable the system tray notifications widget. I've read elsewhere it's a code path issue in Qt that KDE 4.10+ triggers that wasn't triggered in the past and could require a significant rewrite of Qt to fix. Also doesn't seem to happen on either system with compositing disabled, but I like my eye candy ;)

So for me, it seems to get triggered more often with kwin running compositing on nVidia cards than Intel cards. You guys having issues might try disabling the notification widget. Yeah, notifications can pop in the middle of the screen, but at least the don't bring kwin down with them.