To stop the on-going complains and potential legal action, Orange, the exclusive iPhone distributor in France, decided to fully unlock the data speed of its 3G network for the iPhone 3G. So, if you are located in a area properly covered by the 3G+ network and that not all neighborhoods are using the same network, then you could experience data speed transfer up to 7.5 Mbit/s. Orange should unlock gradually its entire 3G network, while upgrading it too to face the increasing usage.
[translation by Linathael]