Both priests at my church go for about 15 to 20 minutes at an absolute maximum. The liturgy itself is well over an hour an a half, but the sermon is just one small part of it and is actually optional on all days other than Holy Days of obligation.
@JUSTAVAPORHERE@xanga - For the Catholic, the sermon is just one tiny part of the liturgy. For us, the focus of the Mass is not what the priest says in his sermon - it is what the priest gives us from the altar that is the most important. Sermons are wonderful things - don't get me wrong - but worship of God in Word and Sacrament are far more important to us.
Protestant ministers go long here in Georgia as well.
When I preach, it's usually 15 to 20 minutes, but I've done 10 minute sermons before. When the other minister at my church preaches, he can go on for 20 to 30 minutes. If I preach longer I get bored, and if I get bored then I know my congregation is bored.
Our pastor usually preaches 30-40 minutes. We have two worship services on Sundays, and each lasts about 60-75 minutes. (we always go to both) The sermons are the key point of the liturgy though. So I'm quite happy that half the service is sermon, because it's through the preaching of the Word that faith is built.
I used to go to a church where the pastor only took 20 minutes maximum! We used to joke aout his style becuse it was like listening to a "machine gun"! He spoke so fast that it was hard to take notes but if you listened intently he had a lot to say in that 20 minutes!
I've also attended churches where the preaching would last over an hour!