Low to no speed

[#1]

For over a week now my speeds have been less than isdn speeds, tho strangely at 4am bam 2.5mbps. I am connected to the master socket, have been in touch with PN & raised a ticket. This is driving me nuts (broken ankle doesnt help). Any ideas guys?
Bandwidth (Up/Down) [kbps/kbps]: 448 / 3.392
Output Power (Up/Down) [dBm]: 12,0 / 17,5
Line Attenuation (Up/Down) [dB]: 31,5 / 57,0
SN Margin (Up/Down) [dB]: 19,0 / 6,5
EDIT:
hmm slightly better, but still no iplayer
Today 22:54  541 kbps (67.6kB/s)  359 kbps (44.9kB/s)

[#2]

See what result you get from the BT performance tester > http://www.speedtester.bt.com/
Is there a problem at your exchange? > http://usertools.plus.net/exchanges/

[#3]

ahh this sheds some light, cheers BT  

BT is reporting that some of the virtual paths at this exchange are not operating within BT Wholesale's planning guidance, although they are still operating within the product specification.
At busy times, your ADSL connection may operate at a reduced speed, although not all customers on your exchange may be affected. You should only contact support if there is no current ETA date set.
The ETA fix time is: 22 Apr 10
Record last updated: 09 Apr 10
cheers for quick reply btw

[#4]

lol, speedup occured a lil earlier,
Today 03:17 1652 kbps (207kB/s) 365 kbps (45.6kB/s)
woot can finally watch the F1 qualifying at 3:20am..........

[#5]

and here we go again, fault has been passed around plusnet for a cpl of days now and i might get a call from the faults team today  back to sub dialup speeds until someone/something decides i can have any reasonable speeds. last speed test 134kbps down 385kbps up

[#6]

Hi marlon,
One of our agents should be picking this up for you shortly. Sorry to hear about the problems.