Check out the update of Rico on openrico.org.
Well,... it looks like we may have been a bit hasty getting the release out. We have an IE bug in the LiveGrid during certain scrolling actions. Does not seem to be a problem on Firefox. Hmmm, must have something to do with IE's eagerness in sending onscroll events. Oh well, we will be doing a bit of heads down to get it resolved.
Play around with it in the meantime. Sorting, bookmarking, and general scrolling.