MS does not recommend multiple Syspreps of same machine?

Tech-Archive recommends: Speed Up your PC by fixing your registry

From: Charlie (anonymous_at_discussions.microsoft.com)
Date: 09/03/04 

Date: Thu, 2 Sep 2004 20:13:00 -0700

>-----Original Message-----
>Hello all,
>I've been told that Microsoft does not recommend
sysprepping a machine
>which has already been sysprepped once. Due to some
strage imaging
>requirements, I'm in a position where I have to do
exactly this, yet I
>can find no authoritative source for this information on
MS site or
>off. Does anyone have any information on this with a
link to any
>official information one way or another? Anything would
be
>appreciated.
>Thanks,
>Stan
>.
I think the real problem is when you're using a version
of Windows that requires product activation. I do know
that you can't Sysprep one of those more than 3 times. I
believe you can call MS to have the activation reset in
that case though.
>