Version: (using Devel) Installed from: Compiled sources Using KDE42.RC1 with Kontact v1.3 and kmail 1.11.0 from Kubuntu The configure dialog screen of kmail opens up in full screen nd cannot be resized. The configuration screens of the other kontact plugins are much more sane _and_ resizable.
I can confirm this behaviour for KMail 1.11.1 on OpenSuse 11.1. The problem is, that the minimum height of the settings dialogue is to large for a display with 1024x768.
Small note: with the default KDE settings, you can move the windows by holding the Alt key and dragging windows from any point of them. *** This bug has been marked as a duplicate of bug 186218 ***