Just a couple of links about WordPress problems caused by some incompatibilities between jQuery 1.5 and jQuery UI:
I am doing some customization of the iNove WordPress theme(the one used here is the original iNove). You can find it on my GitHub account. Have a look at the Wiki there for some explanations. Please keep in mind that it is work in progress. I have not setup a live demo yet so you have to download and install it to try it.