same here with the update from 4.8.1 to 4.8.2 on Gentoo: all non-kde apps missing from tray.
removing ~/.kde4/share/config/{plasma*,kdesktop*} nullifies plasma config and "fixes" the problem.
and my KDE config directory spans from 4.0 and each version in-between. with all the outmoded, half-deprecated undocumented crap which accumulated inside KDE configs in that time, it's no wonder that something crazy, like this, happens.
same here with the update from 4.8.1 to 4.8.2 on Gentoo: all non-kde apps missing from tray. share/config/ {plasma* ,kdesktop* } nullifies plasma config and "fixes" the problem.
removing ~/.kde4/
and my KDE config directory spans from 4.0 and each version in-between. with all the outmoded, half-deprecated undocumented crap which accumulated inside KDE configs in that time, it's no wonder that something crazy, like this, happens.