The new version 0.4.2 is out. It fixes errors with qt-3.0.x just replace the ebuild called net-misc/ksambaplugin/ksambaplugin-0.4b.build with net-misc/ksambaplugin/ksambaplugin-0.4.2.build
I tested this new version for some weeks now. It works great
fixed (time ago), thanks reporting