Version 0.5.1 of imgAreaSelect is out. There was a bug in version 0.5 that caused the selection area to be positioned incorrectly in WebKit-based browsers, and the new version fixes it — so go and grab it if you want your image cropping (or tagging, or whatever) application to work fine in Safari, Konqueror, and the world famous Google Chrome (and a couple others).
By the way, remember the PHP image cropping tutorial I mentioned in my last post? WebMotionUK just published an updated version of it.