Ok, I've noticed this problem since about half way through my game, earlier on, though, I believe it was working right (or perhaps I just didn't notice).

Anyways, it seems that some of the quest markers (white upside-down arrow) for active quests don't show up on my HUD (meaning the main gaming screen) or on the compass at the top of the screen. It's happened numerous times but I'll site a recent example: I was given the "BLOOD'S HONOR" quest by Aela, she told me to speak to Kodiak Whitemane in his room in the Complanions base, so I marked it as an active quest and noticed that even as I was walking up to him, there was no quest marker on my compass or over his head, however, it did show up on the local map. At first, I thought this problem was limited to the "miscellaneous" quest lines but obviously this is a game wide bug.

Overall, I've found the quest makers on the compass to be of little help as there are so many of them and the difference in size from far away quests and close quests is difficult to discern. It might be helpful if they had some color changes, lighter - darker, or greater size exaggeration to make using the compass a little easier. Also, because of this glitch I find it hard to rely on the compass now. Has anyone else noticed similar problems??
I hope they'll work on a fix for this.

*bump*