I just tested all of your 6 'Member directory' pages and they all work well from my computer. It was probably a temporary slow down, usually they don't lust more then a few seconds.
Also, did you try this from different locations, could it be your local connection?
Let me know if it is still an issue and we will investigate further.
Denys Zlobin
Helpful Apricot
http://www.wildapricot.com