Why it's searching for "blank"?

[planetcaravan]

Hi there,

I'm looking at my Apache2's log while I'm using:

Sugar Version: 6.2.1 (Build 6405)
Sugar Edition: Community
Category: Module Buidlder
Operating System: Microsoft Windows XP
PHP Version: 5.3.3-7+squeeze3
Database: MySQL 5.1.49
Web Server: Apache 2.2.16

Many pages alweys are searching for "blank" subfolder...

File does not exist: /var/www/mysite.it/web/sottodomini/crm/include/javascript/yui/build/datatable/blank, referer: http://crm.mysite.it/index.php?module=ModuleBuilder&action=index&type=mb
File does not exist: /var/www/mysite.it/web/sottodomini/crm/include/javascript/yui/build/paginator/blank, referer: http://crm.mysite.it/index.php?module=ModuleBuilder&action=index&type=mb

In datatable and paginator ther's not "blank" folder.

Why?

[planetcaravan]

Can anybody help me?