Re: Fatal error: Allowed Memory Size
Last time that happened to me, it was “plugins go wild” and there were ridiculous amounts of extra entries in my meta tables in the DB. I have also seen this with bad plugins in general for whatever reason. It could also come from a bad plugin on the WP side of things if you have integration. First place I would check would be the user and site meta tables for both bbPress and WP. As well, try disabling plugins to see if that works.
Trent