Added a new feature: Safari Extensions. Provides more accurate Top Hit results in the Address Field and timing for CSS animations. Adds better stability when using the Safari Reader keyboard shortcut and scrolling through MobileMe Mail. Fixes display of multipage articles from Rolling Stone in Safari Reader. Fixes an issue that prevented Google Wave and other websites using JavaScript encryption libraries from working correctly on 32-bit systems, an issue that prevented Safari from launching on Leopard systems with network home directories, an issue that could cause borders on YouTube thumbnails to disappear when hovering over the thumbnail image, an issue that could cause Flash content to overlap with other content on Facebook, Crate and Barrel, and other sites when using Flash 10.1, an issue that prevented boarding passes from American Airlines from printing correctly, an issue that could cause DNS prefetching requests to overburden certain routers, and an issue that could cause VoiceOver to misidentify elements of webpages.