[Dillo-dev] How to use dicache?

I copied dillorc into ~/.dillo/ and set "use_dicache=YES". I then went into Dillo (0.7.1) and went to Google. (I'm on a 33.6K modem connection so I can see the time it takes to load the Google logo). Then I went out of Dillo and back in again to the Google home page. The Google logo took just as long to draw as the first time. I thought that the dicache setting would keep the images in a cache. Obviously I don't understand how this is supposed to work. Bill