Version:           2.7 (using KDE 4.7.0) 
OS:                Linux

If you have text constantly scrolling down a terminal window in Konsole, the screen only redraws the scrolling text while there is mouse movement.

If you stop moving the mouse, the text stops.

On another machine that I tried this on, it is less pronounced, but still happens off and on.  On that machine, it will stop if you click outside the window and only start again after moving the mouse over Konsole's window.

Reproducible: Always

Steps to Reproduce:
I have written a small c program that displays integers in sequence in an infinite loop.  You can seen the problem if you compile this program and run the a.out in a konsole window.

Actual Results:  
The text freezes and the Konsole window is not redrawn until you move the mouse.

Expected Results:  
Constantly scrolling text with no interuption.

OS: Linux (x86_64) release 2.6.38-11-generic
Compiler: gcc