Apple has just released an incremental point update for Safari 5 on both the Mac and PC, Safari 5.0.3, as well as Safari 4.1.3 for Mac OS X Tiger.
Safari 5.0.3 is largely a security and stability release, although there are some notable improvements including more accurate top hit results in the address field, more accurate results in top sites and more reliably pop-up blocking.
You can download the new version either through Software Update, or directly from Apple’s website.