Telecom just upgraded my cabinet to ADSL2+, and my modem is syncing quite a lot higher than it used to, but my actual speed is unchanged.  I used to sync at about 8mbit down 0.8 mbit up on ADSL1, now my upload sync has dropped slightly and my download sync is huge - but my actual throughput is about the same as ADSL1 or slightly worse (NZ speedtests in the 6-7mbit down range, even at 5.30am).

I browsed here for a while first - is it  to do with my Linksys modem, or could there be some other explanation?

My modem details:

--- System Information ---
Vendor: Linksys
ModelName: WAG54G2
Firmware Version: 1.00.17 , 2009-06-02T19:15:44
Boot Version: 1.03
Hardware Version: 0.01

--- DSL Information ---
DSL Driver Version:  E.25.41.39
DSL VPI/VCI:         0/100
DSL Status:          Showtime
DSL Mode:            ADSL2+
DSL Channel:         64
DSL Upstream Rate:   732000
DSL Downstream Rate: 22351200

                      Down         up   
DSL Noise Margin:    13.0 dB      12.05 dB
DSL Attenuation:      1.5 dB       7.0 dB
DSL Transmit Power:  16.3 dBm     12.4 dBm