I can't help much with this issue, I have never gotten any notification of posts and I don't know enough to fix the problem, but I will pass this on to Michael and let him see what he can do if anything. Thanks for letting me know.
There is a place to notfy you of new posts on each topic. There is also a box to check on your user control panel to check that will give you a notification of every new post on something you commented on. I do get my noitifications.