Josh, >Which version of autocomplete has the setOptions() and flushCache() >methods? I believe that I tried setOptions with Jorn's plugin but it >came back as undefined.
It looks like you'll need to go to the SVN to get the latest version: http://dev.jquery.com/browser/trunk/plugins/autocomplete/ I thought Jörn had updated the version on his site with those changes, but I guess not. I added this functionality a while back. -Dan