Yesterday from approximately 7pm to 10:30pm, the fast search was not working. It would end up showing the page source of coding instead. I confirmed this with a friend and tried to access fast search on different browsers and devices yet they all had the same outcome. Just thought I would let you know!
I'm sorry you had problems with Fast Search yesterday. It seems to be working today, June 19.
Please let me know if you continue to have problems.