moveuser.exe access denied

I am in a middle of migrating users from one domain to the other (Inter
forest, forst functional level 2003). All my desktops are Windows XP SP2 and
I am using moveuser.exe which comes with windows 2003 reskit to migarte the
profile and I use the folowing command

moveuser.exe domain1\username1 to domain2\username1 /y /k

Now 90% of the users profile are moved succesfully its only 10% who get the
following error

Move failed.



Error 5

Access is denied.

I am surprised as there is nothing different on the machines which fail and
the process also remains the same on all i.e. reboot before and after the
moveuser.exe (obvoiusly the user crendetials which run moveuser.exe has the
local admin credentials, does this require domain admin rigths?). I am
confused and can't find reasons as to why it fails on some. please advice.

Regards,
Nitin