[_ck_]

I wonder if a newer bbPress build will be required which can be taken from trac (or via svn).

Let me tinker a bit and see if they changed cookie methods (yet again, sigh)

CONFIRMED: WP 2.6 breaks cookie sync

and I get a endless-loop login by WP 2.6

Many people seem to confirm similar cookie problems:

https://wordpress.org/support/topic/188964

https://wordpress.org/support/topic/188870