jdMorgan - 1:57 am on May 9, 2010 (gmt 0)

rocknbil,

Disable MultiViews (mod_negotiation) and AcceptPathInfo if your site doesn't require them.

These functions can take precedence over mod_rewrite, and "rewrite" the requested URLs before mod_rewrite gets a chance to execute, likely mapping them to folders with the -Indexes option set in your case, resulting in a 403.

Jim