Version:            (using KDE KDE 3.5.6)
Installed from:    Gentoo Packages

It should be possible if you have several month calendar widgets showing at once in kontact to drag-select dates from one month (widget) to another.

As it is today it is e.g. easy to select 07-21 january, but it's very hard to choose 23 january - 07 february.

To choose 23 january - 07 february you would click on 23 in the january calendar view and drag-select and finally release the mouse on the 7 in the february calendar view.