Incredibly slow browsing despite line speed of 3.5...

Question

For about the last week I've had incredibly slow browsing. When I run the BT speed checker it comes back at between 3.5M and 4M. It's like the data is broken up into chunks which are separated by a lot of time. It's like the bad old days of dialup.
The speed tester comes back and said
download speed was 3692Kbps
range 1000-7150Kbps
DSL connection rate 4672Kbps downstream and 888Kbps upstream
IP profile 4000Kbps
Best Efforts 11.51:20.86:67.63
Are there any other tests or web sites, I should visit to try and establish what's going on, before I bite the bullet and report it as a fault?
I'm running Windows XP on a homehub 1 connected with an Ethernet cable and IE8
George Humphries

Answer 1

Sorry I didn't reply straight away it got so bad I couldn't do anything, so I reported it as afault.
I was told there was a fault in the exchange and someone would call me.
No-one has called me back,  but overnight the problem seems to have gone.
The current stats are below, but I don't know what they mean.
DSL Connection
Link Information
Uptime:
0 days, 2:22:31
Modulation:
G.992.5 annex A
Bandwidth (Up/Down) [kbps/kbps]:
888 / 4,891
Data Transferred (Sent/Received) [MB/MB]:
1.98 / 23.60
Output Power (Up/Down) [dBm]:
12.5 / 19.0
Line Attenuation (Up/Down) [dB]:
28.0 / 52.0
SN Margin (Up/Down) [dB]:
6.5 / 6.0
Vendor ID (Local/Remote):
TMMB / TSTC
Loss of Framing (Local/Remote):
0 / 0
Loss of Signal (Local/Remote):
1 / 0
Loss of Power (Local/Remote):
0 / 0
Loss of Link (Remote):
0
Error Seconds (Local/Remote):
30 / 0
FEC Errors (Up/Down):
1,077,323 / 0
CRC Errors (Up/Down):
35,999 / 43
HEC Errors (Up/Down):
80,382 / 24
Line Profile:
Fast
George