Ubuntu :: Clear List Of Recently Opened Files In 'Location' Drop-down Box In File-Open?

I realise KPDF is quite old now but as this issue may recur when I move to a newer distro (well, newer than Hardy) with Okular I thought I'd better ask.I use Gnome, but prefer KPDF to evince when viewing PDF files. However, KPDF's "Open Recent" list behaves very oddly - there's no apparent way to clear it, and items which were on the list one day aren't on it another day (coinciding with old items reappearing on the list).

Is there any way to clear this list?Similarly, is there any way to clear the list of recently opened files in the "Location" drop-down box in File-Open? (which also seems to mysteriously lose list items inbetween reboots).