Oh man!!!! what a pain in the @ss this was!
My problem: Using Drush to download Drupal and other modules, I continually received issues where it seemed like Drupal or the module wasn't there. I would go to the site, and either the Drupal install wasn't recognized or the module wasn't recogized AT ALL. I could install, update and even enable/disable modules with Drush, but they would never show up in the website.
SOLUTION: not sure if this is with Fedora only or what (I'm on Fedora 14) but here is the command
chcon -Rt httpd_sys_content_t folder
folder, for example, might be the module you just downloaded.
It seems like Apache doesn't recognize or read the files unless the label is correct. use "ls -Z" to see the labels. This is something to do with SELinux.
Thanks to Madeye on this find (http://drupal.org/node/1044454).
