@kenp
please post the debug (last faq question)
@Valker
nivo slider 2.7 - yes, it should work with nivo slider 2.7 - i have modified our nivo slider jquery file so i can't test it right away, but in theory you just have to switch the jquery.nivo.slider.pack.js file which is included in the first post and update that file on your server with their new version.
yes it does lag quite a bit, first you have two jquery files included on your site (check the faq what to change) and if that doesn't help change the 1.6.4 jquery file you are using with a different/newer version.
Your site looks awesome btw.