Warning.

Drupal 7.26 has made a change to the .htaccess file. In the htaccess file, the new default is to include:

• Options +FollowSymLinks

If you update to Drupal 7.26 and receive a 500 Internal Server Error, check your server. You can check the server error log. You may find what I found, the server you are using does not support the “Options +FollowSymLinks.”

Prior to this release, this option was commented out and an alternate was used:

• Options +SymLinksIfOwnerMatch

Whether this is a security problem or not, it appears that on some servers the option to use SymLinksIfOwnerMatch is required as opposed to +FollowSymLinks.