If you didn't notice, I put KDE 3.1.1 in unstable now. It's looking pretty good, I got feedback from a user who figured out that compiler optimizations were the ones causing problems with kmail crashing on certain types of messages, so I've got that fix incorporated into both 3.1.1 and 3.1 in stable.
The thing that keeps amazing me whenever I use it is how fast KDE is now on OSX. It's really just as fast as it is under linux now.