Yes, local system, not a real user. It can be a bit of a challenge to get network perms to shares but Netlogon works right out of the box. IIRC the old "Everyone" perm won't cut it and you need to give specific rights to "Domain Computers" or some other such thing (at home now, cannot check).
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Give a man a fish and he will be back for more. Slap him with a fish and he will go away forever.