.htaccess problem for Drupal
This is a known issue, see:
https://www.drupal.org/node/1269780 regarding a longterm resolution.

In general it looks like going forward +FollowSymLinks should be replaced with +SymLinksIfOwnerMatch, but refer to the issue queue item above for a definitive answer.

Typically per host, and definitely with Shared Hosting plans it's up to your webhosts documentation as to what Apache Overrides are allowed by your (system) user account. There is a certain amount of trial and error is seeing if -Indexes for example is allowed on your webserver.

This is why when you upgrade Drupal they recommend backups of your projects .htaccess and robots.txt file as per webhost and project these files are highly likely to be modified.