Raaaaaaarty,
Isn't that how it's supposed to work
I usually get 1 notification per thread, so if I'm 'watching' 10 active threads, after 1 hour away I can have 10 notifications, (although if I don't read them there's still only 10 emails)
In your example you're showing 2 seperate threads, ergo you should get 2 notification emails
AAAAHHHHHH!!! just re-read your post, and I think I see what your problem is,
If you go to your 'Profile', then select 'Notifications and Email' (under 'Modify Profile'), you'll see a line near the top on the right that says - 'Receive reply notification only for the first unread reply.' make sure the box is ticked, (I think by default they're not)
Mark.