It's learning marks my courses red every day as if there's a new update just because I have a pending task with deadline. Every users is automatically subscribed to a forum topic even when they've never used the forum. You get loads of useless "new activity" notification. A better notification system with more specified alert would be a great time saver.

Like Facebook style "You got a new post on your wall", or "Someone commented on your photo". And it should be possible to have access to notification archive and a "mark all forums as READ" and "unsubscribe" button.