Version:           1.8.2 (using KDE 3.4.2-1.0.el3.kde, CentOS)
Compiler:          gcc version 3.2.3 20030502 (Red Hat Linux 3.2.3-52)
OS:                Linux (x86_64) release 2.4.21-37.ELsmp

This is very repeatable.

I am composing a new email message in Kontact 

I type control-p twice (or more).  (control-p is my line up command in my normal editor)
That brings up two (or more -- one for each spurious control-p) print dialog boxes.

I cancel the first dialog box -- no problem.
I cancel the second dialog box -- crash.

[For the record, I'm very impressed that when I restart Kontact it pops up my composing email window and it has not lost any of my typing before the contol-p.  Kudos to you all for that!]