FTTP download speed just fell off a cliff - anybody else see that?

[#1]

Hi there, this morning download speed is a measly 1.8MB  (upload 15MB) - anybody else have that?

[#2]

A belated BT profile change that has only just been received was the problem, reboot and you're sorted

[#3]

Done and Done. Back to lightning! Thanks

[#4]

NP

[#5]

Speed down to 0.53Mb/s, rebooted the router, slowly drifted up to 1.64Mb/s. Think the slow speed started around 7pm (when the "boy"  upstairs came out of his room). Any ideas what has happened

[#6]

My download speed is currently a massive 584kb/s - upload is 5494kb/s.
It tend to drop off the cliff around 9pm each night... should I be seeing SUCH a massive drop? (by morning its back to 16 meg upwards)
Could it be contention on the fibre that goes to the cabinet?

[#7]

Possible.
Conduct a BT Speedtest during the main brunt of the loss.
Can you indicate when it stars roughly, when it gets worst and ideally, a realistic time it stops.
I do appreciate you may not know if you are not up late enough, but something like the following may assist.
http://www.thinkbroadband.com/tbbmeter.html

[#8]

Thanks... I did the bt speedtest and got circa 500K down, 6M up.
Will set this up tonight, and leave on.

[#9]

My speed is also plunging like a lemming - I can only get 891Kbps download whereas upstream it's still 14+Mbps. 
I tried running the www.speedtest.bt.com to find out my IP profile and drew a blank there too "TEST ERROR - unable to run the speed tester. Wait a bit and if you still have problems call your ISP ..."  Next step - if it continues much longer - is to raise a ticket with PN.
BTW I tried installing the tbbMeter mentioned above and that failed too "The application failed to initialize ..."

[#10]

Not sure how the tbb meter is supposed to track any time length... but using isposure over last few night gives ...