I got an e-mail from Plusnet telling me that my ADSL line for Plusnet has been regraded to BT IPstream Max. This could allow me to get up to 8Mbps downstream. I rebooted my router and it showed a downstream link of around 5.2Mbps in the router diagnostics screen. I then ran a speedtest (from ADSLguide) and it still showed a 2Mbps ADSL line speed!
I guess my line is being throttled at 2Mbps at Plusnet. Did anyone else get their line regraded?