Comment 7 for bug 1453463

I was also affected by this issue on a quite fresh 15.10

Version: 1.4.35-4ubuntu1
Provides: httpd, httpd-cgi
Depends: libattr1 (>= 1:2.4.46-8), libbz2-1.0, libc6 (>= 2.15), libgamin0 | libfam0, libldap-2.4-2 (>= 2.4.7), libpcre3, libssl1.0.0 (>= 1.0.0), zlib1g (>= 1:1.1.4), init-system-helpers (>= 1.18~), perl, lsb-base (>= 3.2-14) | systemd (>= 29.1), mime-support, libterm-readline-perl-perl

apt pulled libfam0 by default and lighttpd got the undefined symbol raised.
Installing "gamin" instead solved the issue.