I've updated my 64G iPad (sorry, no interest in iPad 2) to 4.3 and am currently updating my iPhone 3GS. I'm also downloading the latest version of Safari, iTunes and Quicktime to my PC. My question is whether I have the latest version of Safari on my mobile devices. Or, does this matter, i. e., is the version of Safari that I have on either my iPad or my iPhone the latest version that the device will support, regardless of Safari's actual version number? Put another way, do I need to be concerned if Safari 5.x is available for my PC but not for my mobile devices? Thanks!