Strange problem with Mozilla/xpdf

[Victor Munoz <vmunoz@macul.ciencias.uchile.cl>]

  Probably this would be a better question for a Mozilla or xpdf user
list, but maybe someone here has a clue.

  I have woody installed, and Mozilla, xpdf packages from the standard
release. 

  I'm uploading to my web site a series of pdf files, chapter from a book
I'm writing. I'm replacing some of the chapters with newer versions. To
see if everything is right, I open mozilla and click on the links to see
if they download the correct versions. Of eight chapters, named cap1A.pdf,
... cap8A.pdf, everything is Ok, except for cap1A.pdf and
cap8A.pdf. Mozilla opens
xpdf to view the files, and for some reason, instead of the new version
pointed at by the link, it opens a local version, named /tmp/cap1A-7.pdf,
which is the old version (renamed by Mozilla probably, because all
versions were always named cap1A.pdf), so I cannot read the new version
with the browser. Instead, I have to download the file and see it locally
(with either xpdf or acroread). Likewise with cap8A.pdf, where a local
version /tmp/cap8A-1.pdf is opened. There are several pdf files in /tmp,
with today's date, so they were probably generated during the various test
downloads I've done, but it's definitely strange that 2 out of 8 files
were selected to show a strange behaviour (all lines in the html code are
the same, so there should be no problem there). 
  Anyway, I closed Mozilla, the /tmp/*.pdf files disappeared, and when I
started again the new versions were always downloaded.

  Comments?

  Thanks in advance,
							Victor