500 rrror

I am getting frustrated trying to find this answer. When I click on the posts from my site it says: HTTP Error 500 (Internal Server Error): An unexpected condition was encountered while the server was attempting to fulfill the request.
Site: http://www.thehouseofinfo.com

Here is what my error log says on Blue Host: [Mon Apr 15 15:05:00 2013] [warn] RewriteCond: NoCase option for non-regex pattern ‘-f’ is not supported and will be ignored.

Help Please.