[Samba] Handle is unvalid

[Brandon Hagedorn]

I have just installed Samba as a PDC controller.  When trying to join a Windows XP machine I keep getting this error on the last step in the process of joinng the domain and it gives me this error on a pop up message   Your computer could not be joined to the domain because of the following error has occurred:  The handle is invalid.     Any suggestions, I already applied the WinXP_SignOrSeal.reg patch Thanks for the help in advance, Brandon