"Search Forums..." disabled?Follow

For the past few days I have been trying to use the "Search Forums" option now available to me. However, each time I try, it states: "Temporarily disabled for performance reasons." Is this some type of maintenance, or is this option always like this? Please, any information would be greatly appreciated. I have only recently applied and became a Premium member, and would like to take full advantage of the new options I paid for. <Thank you!>