Maybe try Argyll's development version
(http://www.argyllcms.com/Argyll_dev_src.zip) together with colord 1.3.4: I
remember there was a small fix for a segmentation fault. Try it with both
colord-kde and xiccd 0.2.3 (separately of course). I don't know if it will
help, but it's worth trying.
Niccolò Belli