You have to be persistant. Remember your getting the file from someone like yourself or myself. To connect to the file again you either have to find the same file on another users computer, or you have to find it on the same user you started the file with.

Most people take their computers ofline when they are done getting what they want.

I leave my comuter on just about 24 - 7 now. If I do restart I try to make sure that whoever I kicked off their download gets it back.

I limit my connections to about 2 because I only share big files, and I can only feed 2 people at a decent rate.