"replacing invalid security ID" message leads to an hours-long scan on startup, how to fix?

I have a 2003 Windows Server server that on startup starts an hours-long
scan of the filesystem saying: "replacing invalid security id with default
security id..."

I think this might have resulted from an automatic RAID rebuild of the disk,
though I am not certain. The files behave normally once I abort the scan.

I am wondering how I can fix this while the server has Windows loaded up. I
don't want the server offline for hours and hours. The server is local to me
and I have full administrator rights on and total control over the system.
Ideas?

Thank you,
-KF

Hello Ken,

Do not interrupt it, see here:
http://msdn.microsoft.com/en-us/library/ms831783.aspx

Best regards

Meinolf Weber
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> replacing invalid security id with default security id..."
>