I noticed 403 errors on sub directories of my site while looking over google webmaster tools.
for example .com/reviews/ has a 403 error.
I set the default pages for the sub directories (pointed to the primary page in the directory). I believe this will solve the 403 issue (if I am wrong please let me know).
However I am wondering if this has any effect for SEO purposes ? Does google penalize for these 403 errors?