I am experiencing major slowness in loading my pages and sometimes get the error below. I spoke to the server provider and they said it is not a server issue, but one of my plugins or my Classipress theme causing it. What can I do to fix? The website is www.hypester.net
Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, firstname.lastname@example.org
and inform them of the time the error occurred, and anything you might have done that may have caused the error.