Hello Guys,

I need some help form you...how many adsense is allowed on a website...?

with regards,
xxx

3 blocks to a single page is the max.

MattUK is right !!

That does not include one search box and one text link box

and a referral button

The G rules show that you can have up to 3 ad units on a page and one adlink. Have no idea about different publishers on the same page or site though.