I did 4 quests for the bard college in solitude (1 quest to become a member, and 3 quests to find 3 missing things).

The problem is I can't seem to get rid of the 3 items I found. The quest givers didn't take the item from my inventory, and these items sit in my misc. inventory, taking up a total of 12 weight. I can not drop the items, or put them into chests at my house.

Is this a bug? I'm playing on the 360 btw.

Yes it's a bug and it can't be fixed unless you are on the PC.(where you simply use the console to remove the items)

Same thing to me, but quest stuff doesn't take up weight, I know its says it has weight, but drop everything u can and then look, u are carrying 0 weight but still have the quest stuff.