who broke matplotlib?

[Neal Becker]

Any clues?  My program (read_data.py) is using matplotlib
to do plot(); show().

When the plot appears, and I hit the 'save' button, a dialog window _starts_ 
to appear (it's partially transparant and rather screwed up), and I get 
this:

python read_data.py
(9217) KSycocaPrivate::openDatabase: Trying to open ksycoca from  
"/var/tmp/kdecache-nbecker/ksycoca4"
kfilemodule(9217): couldn't create slave: "Unable to create io-slave:
klauncher said: Unknown protocol ''.
" 
kfilemodule(9217): couldn't create slave: "Unable to create io-slave:
klauncher said: Unknown protocol ''.
" 
Segmentation fault (core dumped)