I'm using the latest GIT sources from the past couple of days. This is a full package set rebuilt. I'm seeing may related error messages in the xsession log: KAction::property( "icon" ) failed: property invalid or does not exist KAction::setProperty( "icon", value ) failed: property invalid, read-only or does not exist KAction::property( "name" ) failed: property invalid or does not exist KAction::setProperty( "name", value ) failed: property invalid, read-only or does not exist KToolBarPopupAction::property( "shortcut" ) failed: property invalid or does not exist KToolBarPopupAction::setProperty( "shortcut", value ) failed: property invalid, read-only or does not exist KToolBarPopupAction::property( "name" ) failed: property invalid or does not exist KToolBarPopupAction::setProperty( "name", value ) failed: property invalid, read-only or does not exist KToggleFullScreenAction::property( "shortcut" ) failed: property invalid or does not exist KToggleFullScreenAction::setProperty( "shortcut", value ) failed: property invalid, read-only or does not exist KToggleFullScreenAction::property( "name" ) failed: property invalid or does not exist KToggleFullScreenAction::setProperty( "name", value ) failed: property invalid, read-only or does not exist KonqMainWindow::property( "currentProfile" ) failed: property invalid or does not exist KonqSidebarBrowserExtension::property( "urlDropHandling" ) failed: property invalid or does not exist ListViewBrowserExtension::property( "urlDropHandling" ) failed: property invalid or does not exist KBookmarkAction::setProperty( "url", value ) failed: property invalid, read-only or does not exist KBookmarkAction::setProperty( "address", value ) failed: property invalid, read-only or does not exist My previous full package set from Oct. 17 did not have this problem. So only a few patches qualify as the cause.