[6pack] heat into passenger footwell

[oliver]

hi, all.  i've got the valve turned off at the engine, but heat still comes
into the passenger footwell.  if you take a notebook and place it up against
the tunnel/kidney area, it comes out quite hot.

any thoughts on how to stop this?  the tranny tunnel is insulated; it seems
like its coming from above the tunnel.  is there some kind of heating system
there that maybe is out of whack?