If I reload the page, my forum shows up with some kind of missing codes and looks weird. If I reload the page immediately, the page is OK, if I reload the page again, it looks bad again.
If I click on the logo, it works fine 100% of the time.
I've tested on Firefox, IE, Safari and Chrome, it always does the same thing. I've also tried on different computers.
I've disabled all ads just in case some scripts were bad, no help
I've deleted all cache, cookies ... files
I've also tried the default style, no help
No special changes on the forum.
When reloading pages on others sites, it works fine.