The latest build of WebKit as of 2:00 am EST on Wednesday, November 5, 2008 causes a problem with one of the components of the SafariStand plug-in. Specifically the feature that SafariStand has to disable plug-ins from loading automatically. After upgrading to the latest version, plug-ins load no matter what, unless they are totally disabled in the Safari preference menu.
*** This bug has been marked as a duplicate of 22079 ***