[root@mail ~]# rpm -qa | grep dav
mod_dav_svn-1.3.2-2.1
cadaver-0.22.3-2.2
[root@mail ~]# service httpd restart
Stopping httpd:                                            [FAILED]
Starting httpd: httpd: Syntax error on line 148 of /etc/httpd/conf/httpd.conf: Cannot load /etc/httpd/modules/mod_dav_svn.so into server: /etc/httpd/modules/mod_dav_svn.so: undefined symbol: dav_xml_get_cdata
                                                           [FAILED]
[root@mail ~]#