@Marcosmyara,
Yeah, I think I have the same problem and have written some more details about it in this post:
http://wordpress.org/support/topic/w3tc-disk_enhanced-page-caching-gzip-debugging?replies=1
I believe a number of us are having the same issue, because the post before this one seems to have the same symptoms.
Summary: it has something to do with page-caching support for gzip encoded responses. Try accessing your site with
curl -v <url>
to see if it works. Curl does not send the "Accept-encoding: gzip" header by default, so if it is the same issue as me, then it should work for you.
