Uhm, I'm a bit unclear on the terms here, I just upgraded to VDSL, which may just be the same as the ADSL2+ you speak of, but it would help if you could give some numbers.
Usually it's:
768kb/s - 6Mbit/s - ADSL
6MBit/s - 16MBit/s - ADSL2
16MBit/s - 50MBit/s - VDSL (ADSL2+ ?)

Or that's how I know it here in Germany.
Also, did you get any new hardware when you upgraded or did they just leave you with the old hardware? And how exactly are the pieces connected assuming you didn't get some über all-in-one box like I did? (for the naysayers, it has 5 years warranty!)