How can I tell which WebKit version is running on my Mac Mini 2,1? If I lookup the User Agent on Safari it will tell me the Browser version number and the WebKit version. Is it as simple as this or is it possible for the underlying WebKkit version to be different from the one showing in the User Agent? Perhaps where an older version of Safari has been reinstalled. Will the User Agent always display the current WebKit version or just the one it originally came with? I ask because I had some website layout problems around Webkit 534 and I want to test comprehensively that I have fixed it.