Just upgraded to 1.5.1 and an old bug showed its ugly head in safari: I''m downloading some content via ajax updater and on success feeding a div with the content and using Effect.Appear on it. Works in mozilla flavored browsers and IE 6 but on safari just after the effect stops the div goes mental and looses its position - apparently safari sets it to top:0 left:0 but doesn''t tell its renderer to refresh the canvas. There''s no position rule in the div to begin with. This used to happen prior to 1.5.0, started working on 1.5.0 RC and now is back on 1.5.1. You can see the bug in action if you go to my blog on http://www.spiceee.com/pensaletes/ and click on any of the taxonomy tags that closes every post. Spiceee.