Version: 1.9.1 (using KDE 3.5.2, Kubuntu Package 4:3.5.2-0ubuntu18.1 dapper)
Compiler: Target: i486-linux-gnu
OS: Linux (i686) release 2.6.15-26-386
If kontact is already opened and I invoke it the second time, usually I want the old one to come to front. Instead, a dialog appears, where I can start another one (if I close that, both kontacts crash) or close the current one (also not wanted).
Works for me in KDE 4.3