For some reason, every time I press Ctrl+F in Dolphin or Konqueror, the "Find Files/Folders" dialog remembers "ruby1.9", which I entered in the filename field a long time back. Clearing it or using something else doesn't change what the default value in the dialog, either. And it's a pain because I have to remember to clear it manually if I search from one of the other tabs, as I generally do.
What's the best way to make the dialog stop remembering that text?