[Ipstenu (Mika Epstein)]

>> This meant once I’d logged in via bbPress, when I was browsing WordPress (although it set the ‘auth’ cookie fine and I could view wp-admin/) it ‘appeared’ that I was logged out (log in and register link, instead of log out and site admin). <<

I’m still having that problem, even after following those directions.

I have my WP site URL as root, but the wp-home is set to /blog (since that’s where the blog folder is).

Cookiepath is set to /forums/

sitecookiepath is set to /blog/