Every comment on site show up on search

Hi,

I am using the Global Site Search plugin to search products on my site; http://fondelifair.com
Now it works great if you are logged in, but if you are logged out every comment on the site appears under the product list, how can I fix this?
Also the search is very random, for example if I search hat, I could get anything from earrings to socks! :slight_smile:

Thanks,

Alice.