Mine's the same. 3 meg if I'm lucky, a slow as 1.5 meg if I'm not. I "upgraded" from the 2Mb online, and have been told by the Injuns that its because the network is being upgraded to do 10Mb and that hardly anyone is getting it.. apart from the 15 people I work with who do, I guess!!
I don't mind wating for the upgrades to occur (if that is what needs to happen), but on the days I only get 1.5 Mb I really do begrudge paying 50% more for 25% less, if ya follow my drift