if you are using jstats for your joomla-site you probably have the same problem ...
a lot of visits from an ip address in this NetRange 220.127.116.11 - 18.104.22.168. You can do a lookup for the ip address in a whois database like http://cqcounter.com/whois/ and you'll see that the bot/spider who is bothering you is a service from microsoft.com
To get rid of all the visit counts you can try to insert the ip-address in your jstats_bot table and hope that jstats will recognise it the next time as a bot.
here is the sql code to insert the new bot
INSERT INTO `DATABASE`.`jos_jstats_bots` (
NULL , '65.55.11', 'microsoft.com'