Windows Server 2008 R2 and SQL 2008 Cluster Error

hi

Yes, I am very daring.

I was installing Windows Serve 2008 R2 and SQL Server 2008 in Cluster.

Windows Server 2008 R2 was well.
Cluster W2008 R2, was well.
SQL 2008 Clusterd was bad, very bad.

At the end of the process I got this error:

Require Kerberos to value 1

I didn´t find a solution
I think is for Windows 2008 R2.

The same lab over Windows 2008 runs well, very well.

sAnTos