Two things happen christmas time.
Christmas lights, and central heating. Both can but not necessarily increase problems for DSL, there is also less sunlight so night time radio interference may also possibly affect you.
Thanks, just seems strange that the line has been stable all month since I resynched on purpose, and then the past few days it's sky rocketing.
The only thing I'm aware of is one house with loads of decorations up, but they put those up at the start of the month and it didn't affect my line then.
Not sure if it would be interference as the ES starts to worsen around early afternoon every day and it's not really dark then. They are also bad around 5-6am but again, no idea what could cause it as everyone in this house and the adjacent houses are usually in bed.
We've has the heating on since 9 and that doesn't appear to be causing a problem.
Guess I'll just have to sit it out and hope they go away?