mod_cache serving the wrong content

I'm trying to use mod_disk_cache to speed up a web site that is running on WordPress. Whenever I enable it with

CacheEnable disk /

and the rest being the stock Ubuntu configuration I start to get the wrong results. When I see the main page it's fine, but when I go to a specific post I get a RSS feed instead. Like if the cache is returning the wrong content.

I've disabled my RewriteRules as it seems mod_cache doesn't work with that.

I'm not even sure where to start to debug such a thing. Any ideas?

From serverfault J. Pablo Fernández

• Bug?: Bug #219914 in apache2 (Ubuntu): mod_disk_cache enabled globally by default

  From songdogtech

• I couldn't found why this was happening but I solved it by using WP Super Cache; which greatly increased the performance of my Wordpress.

  From J. Pablo Fernández