Need help with 10second+ TTFB

http://www.webpagetest.org/result/150803_KB_DBA/

It was taking 6-8 seconds previously before the weekend i comeback to check on the site and it has nearly doubled for no reason. What could be the problem i was already trying to reduce it from the 7 seconds.

What could cause this to happen over the weekend with no one doing work on it and how would i resolve this problem?

Shared hosting or a VPS or dedicated server where you have access to install software? Usually my recommended first step would be to install New Relic which will then tell you what is slow but if you’re on shared hosting then a lot of it may be out of your control.

Hi thank you for the response,
It seem to have resolved itself over night and went down to 2 seconds
But i do not have access to many things like you listed so if this would happen again i would need to get in contact with people who do i take it.
Again thank you for your time!