night shots blurry

Another problem I encounter is taking pictures in the evening. When I take outdoor pictures during evenings, how come the pictures come out blurry? This happens usually if there are lights somewhere in the vicinity. But if I use the normal flash setting, the images will be too dark so I want to use the night-time flash. What am I doing wrong?

See my reply on your other post

(Slow shutter speeds mean you have to hold the camera really steady, preferably on a tripod.)