Seems pretty clear....Here is Google's definition of cloaking from
http://googlewebmastercentral.blogsp...delivery.html:
"Cloaking: Serving different content to users than to Googlebot. This is a violation of our webmaster guidelines. If the file that Googlebot sees is not identical to the file that a typical user sees, then you're in a high-risk category. A program such as md5sum or diff can compute a hash to verify that two different files are identical."