[XeTeX] Inactive citation links with hyperref and natbib

[Pierre Morel]

Hello,

I'm writing my thesis using xetex, and use natbib for the bilbiography and hyperref to get links inside the PDF.
Everything is supposed to work together, but the links of citations (which are supposed to get me to the actual reference when I click on a citation) are not active. They appear as links (color, cursor change on hover), but nothing happens when I click on them.
The other intra-document links work well (TOC, figures, equations), and I get no feedback about my problem in the log.
It looks like the (unsolved) problem this guy had with Lyx : http://www.mail-archive.com/lyx-users@lists.lyx.org/msg60393.html

I made sure that I use the xetex option with hyperref, and that all citations are in natbib formats.
For info I use multiple files with \input{} as well as multiple .bib files.

Any ideas on how to solve that ?

Thank you

Pierre