You should be glad. They were going to start throttling in October... Anyways who's going to go over 2.5 GB unless that is your only source of internet and you are downloading a whole bunch of files a month. Plus I don't even get decent speeds to begin with so I don't even care... :/
your data speeds will be lowered to 256Kbps or below for the rest of the month.
I wish I even got that fast of speeds during a non-throttled month :/