I've started using super cache few days ago and actually I was very satisfied by its results. I got to lower the number of queries from 72 to ~ 32!
I am using PHP Speady plugin, and am not sure if it conflicts with super cache. Anyway, Whenever I leave my blog for a day of such, I come back to find it full of weird characters. Nothing shows up in the blog; only a white page with those characters.
So what I do to solve that is that I delete the cached files and turn super cache plugin off.
Do you have any idea y this is happening?