lucy24 - 10:38 pm on Jan 9, 2013 (gmt 0)
Y'know, as soon as I saw the subject line I thought: The answer is going to involve G### Chrome. Crystal ball says Chrome is writing home to report on where it's been.
I presume this is a Google Chrome browser on a Mac, including the Safari name for compatibility reasons?
Why do you presume this, when it explicitly says "Windows NT 6.1" and explicitly doesn't say "Mac OS X 10_something"?
The "Safari" at the end is part of the standard Chrome UA. Almost everything using WebKit includes it; you'll also see it on mobiles.