I´m using quick cache plugin to che my wordpress site and I´ve been using the option "Display number of views on post".
I was told by a visitor friend to my site, that he was unable to read a post. So I checked (logout), and the post show a white page with only tile and Top 10 plugin count.
I disabled "Display number of views on post" and everything is ok now (also disabling cache plugin, but that is not an option).
So, it may be a Top 10 or Quick cahe issue, but i´m asking here first, before trying quick cache support.