I'm trying to get Silverstripe 2.3.3 working under nginx on Ubuntu. Installation has gone pretty smoothly, but I've run into an area of uncertainty with mod_rewrite. I get a message at the bottom of the install page saying "I can't tell whether mod_rewrite is running. You may need to configure a rewriting rule yourself". I've added the rewrite rule mentioned here: http://doc.silverstripe.org/doku.php?id=installation-on-nginx, so rewrites should be working OK.
Is this a problem? Is it just that it can't tell whether it will work? Or will it actually not work?