Sudden (but consistent) speed drop 19 July on - anyone else?

[#1]

Speed dropped first thing yesterday morning from around 3.5mbps, where it was the day before and had been for months, to 2.5mbps, and has stayed at 2.5 since then.
No logical explanation that I can think of - anybody else having a similar problem?

[#2]

Please follow the speed issues guidance - link below.
Your description somewhat suggests you had a resynch at a lower speed.  You need to gather information to determine why.

[#3]

Your line has become banded to between 1 and 3mbps.
It looks like this has happened due to errors on the line.
I can reset it however ideally we need to track down what's causing the errors.

[#4]

Thanks, Matthew - could you reset it, please?

[#5]

I've put that through, should happen in the next 30 minutes or so.

[#6]

Thanks - no change yet, though.

[#7]

Your line is now synced at 3964, giving a profile of 3400. Can you log in to your router and do a single disconnect/reconnect and you should see an increase.

[#8]

3.2mbps now (back to where it was).  May not sound much, but it's 30% faster than it has been for the last couple of days!
Your help with this is very much appreciated - thanks so much for taking the time and trouble to sort it out. 

[#9]

Sadly, it's dropped back down to 2.5mbps again today. 

[#10]

Perhaps go back to what Townman said - post your router stats and speed at PN -link at bottom of post.

[#11]

Quote from: Townman

Your description somewhat suggests you had a resynch at a lower speed.  You need to gather information to determine why.

Quote from: Matthew

Your line has become banded to between 1 and 3mbps. I can reset it however ideally we need to track down what's causing the errors.

If a line has become banded, there is not much point unbanding it unless the reason for banding has been identified and fixed.  Please follow the guidance in the speed issues thread or raise a broadband fault report - links below will help you.

[#12]

Thanks - pushed for time lately, but is this what's needed:
Type Interleave Path
Status SHOWTIME
                              Downstream      Upstream

Data rate(Kbps)           3064Kb                 752Kb

Noise Margin               8                               5

Output power(dBm)     128                           162

Attenuation(dB)             67                             30


Current line speed:  2.7 Mb

[#13]

How far are you from the exchange
http://www.kitz.co.uk/adsl/max_speed_calc.php ;     suggests 4.9km

[#14]

About 3.6km according to SamKnows.

[#15]

Something does not stack up here.  The attenuation figure does not correlate with the Sam knows distance (is that as the crow flies or by road?), the synch speed is far higher than what that attenuation should deliver and the SNRM figure is a bit odd.
Is the router in the master socket?
What router is it?  Do you have another you can try?
Is there any noise on the line?  Dial 17070 option 2.
Please run through the bb fault reporter - link below.