Ah sorry, posted answer in other forum...

The OS reboot solved everything, the SQL service reboot changed nothing.

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Renamed 3 more accounts today.

Last week, netguys created copies of 2 of them with newnames.

I deleted those 2 before proceeding.

The one that never had a newname account is perfect. SQL Server recognizes it instantly.

The other 2, SQL Server does not recognize, and when I select the newnames from AD, the New Login window replaces the newname w/ the oldname.

I think the problem lies somewhere the Access Control tokens? I need to know if there is some way to force an update for the newnames.

P