We only upgrade jQuery if the site is a massive web app, to get the performance gains from a new version. For most of your run-of-the-mill sites with a little

We only upgrade jQuery if the site is a massive web app, to get the performance gains from a new version. For most of your run-of-the-mill sites with a little sprinkling of jquery, to animate a few things and do some basic ajax, there isn't much point in upgrading. The performance gains will probably be negligible. I've found when upgrading jQuery problems rarely occur, and with automated js testing + "vocal users" any bugs are known quickly. ...and of course your coding your site so if js fails it degrades gracefully into a usable site. It's not a massive issue, I think.