Sneaky little thing MSN, from a visit today
1n:24:33 /robots.txt - 22.214.171.124 - Mozilla/5.0 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)
1n:25:05 /dir1/page1.asp - 126.96.36.199 - Mozilla/5.0 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)
1n:25:07 /dir1/page1.asp - 188.8.131.52 - Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/534~~(KHTML, like Gecko)
comes as bingbot and gets the page, two seconds later comes as "regular UA" and gets nothing.
Instead of using their resources on frivolities they should crawl as a proper bot and get peoples web sites indexed.
(ps : ~~ = double space)