I should add that I have not been able to find a single successful solution using Google. All threads seems to mysteriously die whenever this problem is brought up.
Most solutions include:
– Remove all plugins. Does not work for me as I have no plugins, fresh install. Moving the plugins dir has no effect (just to be safe).
– Require files are missing. Required files are present, apache owns the files, chmodded to be sure.
None of these solutions work for me.
The only solution that works is to disable APC. Which is not a solution at all.
I should also mention that the same behaviour, but a different error, occurs on WP 2.8