I posted this by going to Coffeehouse, click new thread, then changed the forum to Tech off. It appeared to be in Tech off for maybe few seconds (I refreshed once to check).. Now few minutes later I check and it's in Site feedback!
Also saw problems with RSS feeds where the OP was a post from another forum (ARCast or something) and comments in the same RSS were from coffeehouse.
And further bugginess: I edited my reply in another thread, the edit stayed there for couple minutes and now edit is gone.
... Cleared my cache & cookies now to see if there's any change to behaviour.