new customer - last couple of weeks have been great - whats happened today?!!

[#1]

up until now i've been more than happy with the speeds i've been getting , but today its been terrible!! taking ages to load pages.
from what i've been reading this looks like a fairly common problem - its like you are lulling us into a false sense of security?
what is going on please?

[#2]

Alison,
Just to rule out the obvious can you run the Bt Speedtest and report the IP Profile and also the current line speed from https://portal.plus.net/my.html?action=data_transfer_speed

[#3]

High-speed Broadband
Postcode:
  xxxxx
Phone exchange:
    xxxx
Estimated line speed:
    5 - Checked on 2010-02-02 18:39:20
Current line speed:
    3500

[#4]

Hi there,
Can you run a BT speedtest for me please? Checking your account everything seems fine.