What are your router stats (under Advanced/System/ADSL Status)?
The best Up Sync Speed therein that Orange offers is about 1.1 to 1.2 Meg. You are getting no more than 1 Meg.
Other ISPs, like Be, offer a mode called Annex M that gives UP Syncs in excess of 2 Meg at a small expense of Down Sync, but Orange doesn't.
1999: Freeserve 48K Dial-Up => 2005: Wanadoo 1 Meg BB => 2007: Orange 2 Meg BB => 2008: Orange 8 Meg LLU => 2010: Orange 16 Meg LLU => 2011: Orange 19 Meg WBC