speed has halved since move?

[#1]

Heya just wondering what is going on with my line plus.net has said i should get 7.1mbs, before on my bt line i was hitting 710kbs, now i am getting between 230kbs and 350kbs, i checked speedtest.net and it says 3.62mbs any idea why my line would have slowed down it is also off peak times 6.30 so it should not be slowed at all any ideas?

[#2]

What do these say....
http://www.speedtester.bt.com/
https://portal.plus.net/my.html?action=stable_rate
and can you post your router stats.
Once we've got that information we will be in a better position to see what is going on.

[#3]

sorry went out for a bit
Download speedachieved during the test was - 4877 Kbps
For your connection, the acceptable range of speeds is 600-7150 Kbps.
Additional Information:
Your DSL Connection Rate :7616 Kbps(DOWN-STREAM), 448 Kbps(UP-STREAM)
IP Profile for your line is - 6500 Kbps

Telephone number:
 
Phone exchange:
   
Estimated line speed:
    7 - Checked on 2010-03-18 19:37:57
Current line speed:
    7150

[#4]

Quote

Your DSL Connection Rate :7616 Kbps(DOWN-STREAM), 448 Kbps(UP-STREAM)

Well your synch speed is pretty good , although it looks like you've got interleaving on so your max is limited to 7616k rather than 8128k. That's going to limit your profile to 6500 rather than the max possible 7150. The BT speedtester is notoriously inaccurate as regards the download throughput speed. Try the PlusNet speedtester here http://www.mybroadbandspeed.co.uk/ as its usually pretty accurate.
A set of router stats would be useful to see what your attenuation and error counts are like, to see if you would benefit from getting interleaving turned off. If you are unsure of getting the stats, try here  http://www.kitz.co.uk/adsl/frogstats.php

[#5]

Hi Pretender,
As MisterW says, if you can post your router stats we'll be able to advise further - your sync speed looks good but I'm not sure about the slightly slower throughput. Perhaps it would be worth looking at tweaking your MTU size - more information on this at http://community.plus.net/library/settings/guide-to-rwin-mtu/