[MiKTeX] Problem with fonts in PDF

[Juan A. N. <ma1...@ma...>]

Hello,

  I have just upgraded to the latest version of MikTeX using the MikTeX
Update Wizard. I have now a problem geneating PDF files.

If I use "pdflatex" I obtain a Warning saying:
  "Warinig: pdflatex (file psfonts.map): cannot open font map file"
and the generated .pdf file does not look well on screen.

If I use "dvipdf" i still obtain similar warnings but the generated .pdf
file does look nice on screen.

Before upgrading both aproaches worked well (withour warnings and both
producing nice output), so I am wondering if anyone is causing this
problems.

Thanks in advance,

juan antonio.