download speed cut by two thirds

[#1]

I just checked my download speed on this: http://www.mybroadbandspeed.co.uk/ and it's been consistently around 6783 kbps but tonight it's dropped to 2632 kbps.
Is that just because it's friday night or something?

[#2]

Impossible to say with so little to go on.  What is your router sync rate?

[#3]

Also as the message says, it may not be accurate. What does speedtest.net give?

Quote

Sorry - My Broadband Speed is currently experiencing technical difficulty and may display misleading test results. Thanks for bearing with us while we fix things.

[#4]

Hi there,
Can't see anything on your account or line that would explain that, have speeds returned since or are you still suffering with a slow connection?