Hotmail not liking Firefox for a few minutes

Ok, first of all i wanna say that i am not a MS basher. But i just want someone to explain how come at 17:30 GMT when i went to check my Hotmail account with FireFox did i get "server to busy" yet with IE i logged in fine. Hmmmmmm selective me thinks.

Yes yes, i believe consipiracy theories here ;o)