But... Just in case people get butt hurt about pointless mini quests that take 5 min to complete I will warn you... Spoiler alert.
When playing anything new I tend to over do the whole mini quests from some of the nub cakes at the castle or dawnguards fort. When playing as a VL I think I have finished all the mini quests and now they are looping... One quest wants me to turn somebody somewhere into a vampire... Well I noticed I already did this. Same person, same location, different day. (EDIT: Just to make it clear... I have already turned this so and so into a vampire)
I followed the quest marker and wound up in this persons house. I entered the home and was greeted in a friendly manner. The person was constantly thanking me for turning him/her.
I used vampire seduction, waiting for him/her to sleep, punched him/her, then I gave up. I did a sneak attack (only for the wonderful animation ofc) and watched his/her dead cold blood drip into the floor boards.
The quest became marked as 'failed'. That's the first issue.
The second issue is the fact that I have been given the exact same quest and the marker takes me to the last persons dead body and requests I change them into a vampire.
WHAT THE [censored]?!