Here's my debug output:
<!-- W3 Total Cache: Page cache debug info: Engine: disk: enhanced Cache key: _index.html_gzip Caching: enabled Status: not cached Creation Time: 0.191s Header info: X-Pingback: http://www.trevorandchristie.com/xmlrpc.php Content-Type: text/html; charset=UTF-8 Last-Modified: Wed, 02 Jan 2013 06:46:02 GMT Vary: Accept-Encoding, Cookie X-Powered-By: W3 Total Cache/0.9.2.5 Content-Encoding: gzip -->
In my pgcache directory, there's a _index.html, but no _index.html_gzip. If I create a _index.html_gzip by doing something like
echo "HI" | gzip > _index.html_gzip, then I get a big HI on the page.
It seems that it's generating the non-compressed version of the page, but not the compressed one. Why isn't it generating the gzipped version?