[detaro]

Shared hosting setups where you want .htaccess support (or something comparable, but same basic issue: requires some additional layer to validate and generate a centralized nginx configuration, or some other extra layer, with Apache it is built in and well-documented).

WebDAV support.

[ag_47]

As far as htaccess support, from the couple Shared hosting providers I've used, lighttpd has been the server of choice.