How often do you have random (i.e. non-quest related) encoiunters, especially in areas out of the city? Thus far I have only one 'outdoor' encounter which sparked off a quest, but that's it.
Within the city I see vamps and thieves duking it out (usually the vamps win), I have been beset by slavers twice (what's an Orog?) but that's it.
Admittedly I haven't gone very far, just into Chapter 2 and just finished Nalia's quest, freed Hendak and am about to embark on the rest of the Slavers quest.
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"Butt-kicking for goodness!" - Minsc