It worked before, but now it does not. A few services (like varnishd, memcached, apache2) get started on boot, but many others do not, like: nginx, php-fpm, vz.
I don't know where to look at. There is no problem in /var/log/messages or in each service log. I check and all those services are marked to run at level 2-5.
On Debian Squeeze + dotdeb.