xcoder - 10:10 pm on Dec 16, 2012 (gmt 0)
Note how the word "bot" is not mentioned in the user agent string. This bot probably affecting many website logs. Look for it. Your tracking software will most likely report it as a normal viewer. Reverse DNS is the only way to detect it... so much for "old fashion" server logs. You easily notice/pick those things only in real time viewers analysis using customized scripts.
18.104.22.168 [msnbot-65-52-108-222.search.msn.com]--[Microsoft Internet Explorer]--[Screen Size: 800x600]--[Color Depth: 16 colors]
Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2; SLCC1; .NET CLR 1.1.4325; .NET CLR 2.0.40607)