[pdftex] warnings

[ivo welch]

hi:
My pdflatex runs receive tons of warnings like

! pdfTeX warning (dest): name{page.1039} has been referenced but does 
not exist
, replaced by a fixed one

of course, I use hyperref:
  \usepackage[
    pdftex,pdfauthor={me},pdfcreator={pdflatex},letterpaper,colorlinks,
    pdffitwindow=true,pdfstartview={XYZ null null 1.5},
    breaklinks=true,backref=true,plainpages=false,pdfpagelabels,
    bookmarks=false,pdfpagemode=None]{hyperref}

The warnings do not seem to make a difference in the pdf output, at 
least from what I can notice.  May I ask where the warnings comes from?  
(I did try to google for warning messages starting like this, but could 
not determine why.)  Can irrelevant warnings be turned off?

sincerely,

/iaw