To enable the rewrite engine in this context, you need to set
"RewriteEngine On" and "Options FollowSymLinks" must be enabled. If your
administrator has disabled override of FollowSymLinks for a user's
directory, then you cannot use the rewrite engine. This restriction is
required for security reasons.
I wonder what are those security reasons. FollowSymlinks is necessary
even if no symlinks are involved, isnt it? What could happen if
FollowSymlinks where not necessary?