Same here, Ciadan. Not sure what is happening though as I have tried Firefox only a few times. I am sure it is not my internet connection because I have used Firefox competitors' and working fine.
Crashed on me a couple of times today when I was looking at the Plovdiv Airport website - I'd be highly surprised if 3 AAMers were looking at that website on the same day! I'm using version 2 as a lot of people don't seem to be happy with version 3.