i have checked all her items. apparently there is not any movement decrease item that she is wearing at the moment.
and she is very slow, either in the town, dungeons or in the wilderness.
how can I speed her up?

[ December 03, 2006, 15:41: Message edited by: Taluntain ]

I know this may sound like a stupid suggestion, but in the interest of getting more information, is she encumbered? In NWN2 there are three stages to encumberment: unencumbered(shows as white text in inventory), slightly(shows as yellow text), and heavily(shows as red). If its either of the latter two the character will slow down.

Is she cursed in someway? Under the effect of some spell?

Failing everything, purposely get her killed and see if the problem is solved when she is revived.

it is because of her 'search' mode. i have de-activated it and she is fine now.