BT speed drop on ASDL line

Over the last 2 weeks my speed has dropped from 01/05/10 16:33 Downstream :- 6057.70 Kbps, Upstream :- 374.91 Kbps. to 16/05/10 06:31 Downstream :- 473.91 Kbps, Upstream :- 355.01 Kbps.
I called BT they sent out someone to check the line & exchange and i was told the line is ok but BT might have to reset the card. Well BT called me to ask if the line had been checked, i told them what the enginer said and told them what speed he said i should be able to get (6212.00Kbps) and was told on the phone that the max speed will be only 1582.86Kbps. So 2 speeds from 2 different people which is right ?
I was told by BT that the speed will not be stable for another 67hrs & 28mins untill all the work was carried out.
Time is now up and all i get is 473.91Kbps downstream & 355.01 upstream & and a very noisey landline. Has anyone any ideas ?? attached are the stats from my Hub :-

ADSL line status
Connection information
Line state Connected
Connection time 0 days, 1:32:18
Downstream 2,112 Kbps
Upstream 448 Kbps
ADSL settings
VPI/VCI 0/38
Type PPPoA
Modulation ITU-T G.992.1
Latency type Interleaved
Noise margin (Down/Up) 31.9 dB / 25.0 dB
Line attenuation (Down/Up) 37.0 dB / 24.5 dB
Output power (Down/Up) 19.8 dBm / 12.2 dBm
Loss of Framing (Local) 92
Loss of Signal (Local) 19
Loss of Power (Local) 0
FEC Errors (Down/Up) 2035783 / 0
CRC Errors (Down/Up) 5222 / 2147480000
HEC Errors (Down/Up) nil / 0
Error Seconds (Local) 45235

Has anyone any ideas what to do next ??????

Thanks in advance.

Hi Donewalking,

It sounds like there is noise interference on your line that has caused your IP-Profile and sync speed to drop. If the noise has gone you should see your speed increase but this can sometimes take up to 72 hours to complete. I would like to take a look at your Broadband for you. Please could you drop me an email with your BT account details? My email address is [email protected]. Please also include a link to this thread.

Cheers

Paddy,