Now this was completely bizarre. So, i ended up deleting an award yesterday from the system. As soon as i delete it, i ended up with "Your Notifications: 4,294,967,316"
Some MySQL versions has issues with setting unsigned integers (numbers that cannot go in the negatives) to their maximum positive value when you do "0 - 1".
Code:
UPDATE user SET dbtech_vbactivity_medalmoderatecount = 0