Nextgen scroll plugin freezing post

All of a sudden my production site (www.ulsterhabitat.org/restore) is freezing on my thumbnail slide show. It is working correctly on two test sites ,but not in production. We have disabled it on all but this one page as once the page loads you cannot scroll. All sites are running the same level of software and the same plugins. Help!! We have deleted the plugins and reinstalled to no avail. Any suggestions welcome.