asterisk users - Apr 2006 - Receive fax (libtiff problem?)

Hi,

I'm trying to receive faxes with asterisk. Everything works fine except
the tif to pdf conversion. Even though the tif file is okay, the pdf
always turns out to be empty (blank)..

I read that this might be caused by incompatible libtiff and that I
should install another version.

But when trying to uninstall with rpm -e libtiff I get the following
error:
error: Failed dependencies:
        libtiff.so.3 is needed by (installed)
cups-libs-1.1.22-0.rc1.9.8.i386
        libtiff = 3.6.1 is needed by (installed)
libtiff-devel-3.6.1-8.i386

I didn't find anything on google on this so I thought you guys might be
able to help me.

Thanks!

Regards,
Jan