Description of problem:
Adding digital signature to OOo writer file is not possible, and file signed
with a working OOo installation (Windows) are not displayed as signed.

Version-Release number of selected component (if applicable):
[root@nbklx i386]# rpm -qa openoffice.org\*
openoffice.org-calc-2.0.2-5.17.2
openoffice.org-pyuno-2.0.2-5.17.2
openoffice.org-math-2.0.2-5.17.2
openoffice.org-core-2.0.2-5.17.2
openoffice.org-impress-2.0.2-5.17.2
openoffice.org-draw-2.0.2-5.17.2
openoffice.org-xsltfilter-2.0.2-5.17.2
openoffice.org-writer-2.0.2-5.17.2
openoffice.org-langpack-it-2.0.2-5.17.2
openoffice.org-graphicfilter-2.0.2-5.17.2
openoffice.org-testtools-2.0.2-5.17.2
openoffice.org-javafilter-2.0.2-5.17.2
openoffice.org-emailmerge-2.0.2-5.17.2
openoffice.org-base-2.0.2-5.17.2
[root@nbklx i386]#

And this as well, I think it's relevant:
[root@nbklx i386]# rpm -qa xmlsec1\*
xmlsec1-openssl-1.2.9-4.2
xmlsec1-nss-1.2.9-4.2
xmlsec1-devel-1.2.9-4.2
xmlsec1-openssl-devel-1.2.9-4.2
xmlsec1-nss-devel-1.2.9-4.2
xmlsec1-1.2.9-4.2
xmlsec1-debuginfo-1.2.9-4.2
[root@nbklx i386]#

How reproducible:
Always

Steps to Reproduce:
1. open a file with OOo writer;
2. using menu choose: File | Digital signatures... 
  
Actual results:
You are showed a warning dialog box with:

"Digital signatures functionality could not be used, because no
Mozilla user profile was found. Please check the Mozilla
installation."

Expected results:
A list of the signatures already in the file should be presented. It should be
empty if no signature is present.
From there the dialog to add signature to the OOo file can be carried on.

Additional info:
If you sign a file with OOo from OpenOffice.org (or in Windows) you won't see
the digital signature using FC5 OOo.

Deinstalling FC5 OOo and installing the OpenOffice.org original distro and with
that I was able to sign the file.

I did some debug using ooo-build infrastructure, and I can provie further info
(alas ! only few infos ), seems related to --with-system-xmlsec configure flag.

I added the OOo bug reference that drove me here.