it's always down with photo post, and wp is usually very slow too when that happens. If the server logs say it's topping at 51%, is that processor and ram? Perhaps there's a bad ram board or cpu core.I really don't know the cause... The server resources have not exceeded 51% in a long time. I am thinking it's more of a vbulletin issue. Will continue to investigate and I am also fast-tracking the vbulletin replacement.
I echo this experience. Not sure if it matters, but I'm using a Mac and browsing with Safari. I never try to access the site through my mobile device.It's constant for me; I rarely can get through. No pattern or time of day. Often before finishing a post, too (we'll see here).