[tex-live] Beamer package color trouble with TeXLive 2007

[Dr. Werner Fink]

Hi,

the beamer package seems to have trouble with the pdfTeX
engine used for LaTeX. Note that the same beamer package
has worked perfect within TeXLive 2005.  Just an example

  \documentclass{beamer}
  \mode<presentation>{\usetheme{PaloAlto}}
  \begin{document}
  \begin{frame}
  \begin{block}{Question}
  answer
  \end{block}
  This text should not be grey
  \end{frame}
  \end{document}

with TeXLive 2005 the foreground text after the block
environment is black but with the TeXLive 2007 the same
text has the same foreground cloror as the background
of the answer block.

What does cause this change?  The beamer package hasn't
changed.


     Werner

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