I just turned preloading on, (set Refresh preloaded cache files every 1440 minutes, and then clicked Preload Cache Now).
I've been refreshing the settings page and the Cache Stats to watch the progress -- but I'm wondering why the # of cached pages (under the cached stats) keeps getting reset back to 0 every few minutes. It's like it keeps deleting the files it creates each time wp-cron runs. Seems counterproductive..?