Re: KDE 4 performance improvements on the way?
Nice. Upgraded to KDE 4.3.4 last night. I noticed KDE had a tendency to hitch for a fraction of a second when maximizing some windows, but that seems to be gone now.
If you run Kubuntu or Ubuntu w/ KDE 4 you can find instructions for upgrading on the kubuntu.org homepage.
Edit: I've read that a KDE 4.4 beta will likely be released any day now.