footnotes with PPower4

Dear List Members,

Probably this is too simple, but I can not find a solution:

I whan to show two footnotes in one slide where I have a list 
sentences. Each line has a pause. Why the footnotes come only when 
the last pause has finished.

My LaTeX code is something like:

\foilhead{Xxx}
  Bla Bla something 1\footnote{a}. \pause

  Bla Bla something 2\footnote{b}. \pause
  ...

Can someone be so kind to give some hints on how to solve this? I 
have tried \pause\pauselevel{=1} within the footnote but it does 
not work.

Thank you!

Luis

-- 
   Dr. Luis Samaniego
   UFZ Centre for Environmental Research Leipzig-Halle, Germany
   Computational Environmental Systems (CES)
   www.ufz.de