I am just curious to know as to why I have been awarded three 'fanatic' badges, all at the same time? I am aware that I have earned one, but I am curious if the other two are the result of some sort of bug or if this is meant to happen. Thank you!
The Fanatic badge is supposed to be earned once. Otherwise Asaf Karagila would have earned 19 of them for the 19 disjoint 100 consecutive day periods he has visited the site (or 197 for the 197 different 100 consecutive day periods he has visited the site).
The fact that you earned three in five minute intervals is most certainly a bug. Multiple awarded Fanatic/Enthusiast badges have occured before. That case had to do with accounts being merged, which I cannot see in your account history.