lucy24 - 10:41 pm on Aug 6, 2012 (gmt 0)
RewriteRule ^ - [F]
What request would fit this rule? There's a beginning anchor followed by... what, exactly? I'd say .* instead, without anchor. Except I wouldn't really, because you can constrain most rules to requests for pages/directories and then Apache can just cruise on past if an already-approved visitor goes on to ask for css, js, images and whatnot.
Is it a non-human visitor? Mobiles don't get the favicon (my usual #1 test) but they'll get everything else in one quick gulp.