"I'm a Nay Saying worm beast!"
Edit (first explanation was wrong): I'm not sure now what the problem is. Have you maybe looked at the list before the notifications have a chance to go out? You are only notified about items that are new.
Uh, no. I mean, I pointed my browser on GeekDo, was notified of one new item, clicked and went to thread. New items being now zero, I went on geeklist, saw new stuff, wondered why I wasn't notified of that. But anyway, the problem now seems resolved. Perhaps, unsubscribing and re-subscribing worked, after all.