Many thanks for your reply kitz.
Good lines tats, but poor throughput is symptomatic of problems in another area such as exchange (or ISP) congestion.. which perhaps sounds like the problem that you had in March.
Well my line stats from my 585 v6 are as follows.
Bandwidth (Up/Down) [kbps/kbps]: 768 / 8.128
Output Power (Up/Down) [dBm]: 11,5 / 19,5
Line Attenuation (Up/Down) [dB]: 16,0 / 26,0
SN Margin (Up/Down) [dB]: 6,0 / 6,5
Vendor ID (Local/Remote): TMMB / ALCB
Loss of Framing (Local/Remote): 0 / 0
Loss of Signal (Local/Remote): 0 / 0
Loss of Power (Local/Remote): 0 / 0
Loss of Link (Remote): 0
Error Seconds (Local/Remote): 3 / 0
FEC Errors (Up/Down): 0 / 0
CRC Errors (Up/Down): 0 / 2.421
HEC Errors (Up/Down): 0 / 1.582
I guess my best option is to let BT change my line card and hope that they don't create more problems than they fix.
Many thanks