Power on light (led) with 23" cinema hd ?

hi, i am used to the "old" apple monitors where there is always a power on light visible.
my new cinema 23" display has only - for a small second - light on when starting up and shutting down. is this normal behaviour ?
tia

Yes. See:
<http://docs.info.apple.com/article.html?artnum=301944>

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