Help - vBulletin Index taking FOREVER to load

[momzone]

I'm trying to figure out why our main forum page is taking forever to load. It has really hindered the activity where we used to have several hundred messages a day being posted by many many many members to now about 50 - 100 posts a day by a portion of those members who are die hards to our community.

Could it be the hacks that were installed? It is just the index page that takes forever. I have seen other sites that have as many or even more boards than we do and we have always had this many boards with the site in the past loading much faster. I have tried both showing and not showing the subthreads on the index page but it doesn't seem to make much difference.
here is the link to our main boards http://www.momzone.com/vBulletin

This has been happening for awhile but I've been busy with our other sites so just now getting around to trying to solve the problem as we want to promote the community to gain new members in the next week or so.

Any help is greatly appreciated!