Same problem on my AMD64 machines after upgrading to Oneiric. FWIW, the OP noted that this appears to be a Kubuntu-specific bug, not a bug in Plasma: https://bugs.kde.org/show_bug.cgi?id=284015
** Bug watch added: KDE Bug Tracking System #284015 http://bugs.kde.org/show_bug.cgi?id=284015 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to libreoffice in Ubuntu. https://bugs.launchpad.net/bugs/886734 Title: [Kubuntu 11.10] LibreOffice icons are missing from taskbar Status in “libreoffice” package in Ubuntu: Confirmed Bug description: In kubuntu 11.10 the generic X icon is used in the taskbar entries for all of the LibreOffice aps instead of app specific one. libreoffice 1:3.4.3-3ubuntu2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libreoffice/+bug/886734/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp