Version:           3.1.2 (using KDE 3.3.0, SuSE)
Compiler:          gcc version 3.3.4 (pre 3.3.5 20040809)
OS:                Linux (i686) release 2.6.8-24.11-default

I start with a new project. 

I create a qmake project.

I add a subproject "b".

I add several files to both headers (.h) and sources (.cpp) for each.

I try adding multiple (10 at once) files to the header section of each and after 1 or 2 times kdevelop will freeze completely while using 100% of CPU (I have to hit the reset switch if I can't kill it fast)

This project is permanantly stuck for adding files afterwards, I reload kdevelop and try to add files in the same way and it will freeze again.

This applies for the qmake manager projects AND the automake manager projects, both will have the same freeze.