Default SGS3 LTE 4.3 proxy settings problem


I have just upgraded a non rooted phone from 4.1.2 to 4.3

Now everytime I connect to wifi it shows a proxy. Even if I go into advanced and set it to None it comes back as manual. I've deleted and recreated the connection but always still there.

Shows as Manual with the loopback address of and port 3128

I haven't installed a proxy service on the phone to use and I don't use a proxy on my networks but on some networks everything seems to work but on others some services don't?

So why won't this stay set to none?

Thanks for any help