Ventilated seat not cooling on bottom?

[jacksonian]

I have an '09 X5 with the active ventilated seat package. I know the airflow is usually kinda weak. But I usually notice at least a little cooling. For some reason, this past few days, I can feel some cool air on my back, but it actually feels like my seat bottom is heating up instead of cooling. I can put my ear to the cushion (not while driving ) and hear the fan blowing, but it feels like the seat is getting hotter, not cooler.

Has anyone else experienced this? I think I read somewhere here that the air blowing through the seats just comes from the cabin, below the seat, but the air in my cabin coming through the seat shouldn't feel hotter than the air on my back.

Any thoughts?