Having just emerged what looked like a couple of hundred things, many of them KDE-4 related, I'm surprised that on reboot I'm still running KDE 3.5. Moreover, there's only /usr/kde/3.5, no 4*. The only change I noticed was in the background of the login dialog.
One guess is that the flood of newly-stable things in incomplete. But I have not been watching the news, so I don't know. Should I just wait, or is there something I should be doing? ++ kevin
