Exiting every KDE program shows the crash handler

[Piers Kittel <debian@biased.org>]

Hi all,

Reinstalled Debian last Friday, and upgraded to testing, and installed
KDE, and it worked fine until today, every time I exit any KDE
application, I get the KDE crash handler, for example if I load up the
calculator, and I exit it, I get:

The application unknown (kcalc) crashed and caused the signal 11 (SIGSEGV)

This even occurs when I stop the screensaver.  It doesn't affect
anything, but it's annoying having to click on "OK" every time I see the
crash handler dialog box.  I've tried to get a backtrace but I always
get this:

This backtrace appears to be useless.
This is probably because your packages are built in a way which prevents
creating of proper backtraces, or the stack frame was seriously
corrupted in the crash.

What have I done wrong and how do I fix this?

Thanks very much for your help in advance

Cheers - Piers