Seems to me that I ran into this before and it was a cookie issue
On Nov 7, 2012, at 9:20 AM, Fred Jones fredthejonester@gmail.com wrote:
I have a Drupal 6.26 site on a VPS. At random, pages return WSOD and no log in Apache. Whenever this happens I see an access denied error in the log from user Anonymous and the URL I just tried and the time etc.
The hostname there is the IP of the server itself. That's what's bizarre. Also that it's anonymous. I am logged in as user #1.
I can't find any report of this issue. Anyone ever see such a thing?
Thanks, Fred -- [ Drupal support list | http://lists.drupal.org/ ]