Probably affects all gecko-derived browsers, like iceape, kazehakase, epiphany, namoroka, whatever. May be exclusively a KDE-derived problem though, I don't know.
Sometimes, for some reason, the system decides that you probably want to open downloaded PDFs, from iceweasel's/firefox' downloads window, with krita or gimp, programs that won't open PDFs at all. It's really confusing because you even have a correct, pdf-reader application set as default in other parts of the system (file...
