[Plugin: Wibstats] wibstats creates large amount of 404

Hi,
I have just installed a plugin that sends me a message every time there is a “page not found 404” on my site. Now it appears that although I fixed pretty much all other issues, wibstats still creates quite a number of those 404. (At least i think it is wibstats)

Below are two examples of page links that something or someone is trying to access.

Any idea what is going on here?

Thanks
Meini

http://www.utechworld.com/Sites/UtechWorld/wordpress/wp-content/plugins/wibstats-statistics-for-wordpress-mu/wibstats.php?color=32&res=1024×768&browser=Firefox&version=3.5&platform=Windows&referrer=http%3A//world-time.archivospc.com/descargas/&page=http%3A//www.utechworld.com/&title=Utech%20Computer%20Solutions%20-%20Useful%20fun%20for%20the%20world&city=undefined&country=undefined&countrycode=undefined

another one I just got

http://www.utechworld.com/Sites/UtechWorld/wordpress/wp-content/plugins/wibstats-statistics-for-wordpress-mu/wibstats.php?color=32&res=1280×800&browser=Explorer&version=8&platform=Windows&referrer=http%3A//www.google.com.co/url%3Fsa%3Dt%26source%3Dweb%26ct%3Dres%26cd%3D1%26ved%3D0CAkQFjAA%26url%3Dhttp%253A%252F%252Futech.utechworld.com%252FOZPostcode.php%26rct%3Dj%26q%3Dutech%26ei%3DEmKhS4SwKtSztgfYreDyBw%26usg%3DAFQjCNFOyPoLRmK0SwHJhXMlOuNKPfg6Cg&page=http%3A//www.utechworld.com/&title=Utech%20Computer%20Solutions%20-%20Useful%20fun%20for%20the%20world&city=undefined&country=undefined&countrycode=undefined

http://wordpress.org/extend/plugins/wibstats-statistics-for-wordpress-mu/