I've just had a look on this:
It appears that the exchange is ADSL2+ but apparently the cabinet isn't scheduled to be upgraded till June 2011.
Right now I am connecting to the exchange at 2100kbps; I assume that the crappiness is due to the cabinet not yet upgraded? or is it something I should have a talk to Telecom about? is there a way to find out how far I am from the exchange/cabinet?