Missing data?

I’m trying to troubleshoot my setup, and am stuck with the following problem, can anyone advise?
I have an emonpi sending data back to emoncms.org. My feeds on emoncms.org are only occasionally updating - like 6 hours of nothing and then a few updates happen.

Looking at the pi emonhub page, I see the following problem:

WARNING emoncmsorg emoncmsorg couldn’t send to server, URLError: [Errno -2] Name or service not known

But it’s obviously working sometimes. Wifi and broadband seem OK (I’m connecting to the Pi remotely without any problems).

Any ideas?

Hi all,
Is anyone else seeing issues like this with emoncms.org, or is it just me!?