Combination between biblio_facet and taxonomy_facet doesn't match sometime

Hello,

I have installed Drupal 5.3 and tried to build my Site with faceted_search and biblio_facet.Faceted_search ist fantastic but I have got a problem with the combination between biblio_facet and taxonomy_facet.It doesn't macht sometimes. :(

for example:
- I have publication_year as a facet(field_facet)
- And book, jornal article as taxonomy_facet

when I choose year=2007 --> book(15) and jornal article(3), Ihave 18 results
and then I use the next refine book, I have 18 result(it should be 15 results)

Have you got this problem as a bug ?? I looking for a solution.

Heer are die version of the modules
biblio-5.x-1.9
biblio_facets-5.x-0.4
faceted_search-5.x-0.10

Best regards.

chienhuu